Global Research and Development Expenditures: Fact Sheet

Global Research and Development

Expenditures: Fact Sheet

Updated September 14, 2022

Congressional Research Service

https://crsreports.congress.gov

R44283

Global Research and Development Expenditures: Fact Sheet

esearch and development (R&D) plays a central role in advanced economies in areas such

as economic growth and job creation, industrial competitiveness, national security, energy,

agriculture, transportation, public health and well-being, environmental protection, and

expanding the frontiers of human knowledge understanding.1 Accordingly, companies,

governments, universities, nonprofit organizations, and others around the world have made

substantial investments in R&D. Since 2000, total global R&D expenditures have more than

tripled in current dollars, from $675 billion to $2.4 trillion in 2020.

R

The United States emerged as a global leader in science and technology in the second half of the

20th century. During this period, U.S. public and private investments in R&D grew rapidly and

helped to propel the United States to a position of global economic leadership. By 1960, the

United States accounted for approximately 69% of the world’s R&D funding. By 2020, however,

the U.S. share of global R&D expenditures2 had fallen to about 31%.3 (See Figure 1.) The U.S.

decline in share of global R&D is not the result of a reduction in U.S. R&D investments—in fact,

U.S. public and private R&D grew robustly during this period—but rather is the result of even

greater increases in the investments of the governments and industries of other countries, which

have recognized the importance of R&D to their industrial innovation and competitiveness.

Figure 1. U.S. Share of Global R&D, 1960 and 2020

Sources: 1960: CRS analysis of U.S. Department of Commerce, Office of Technology Policy, The Global Context

for U.S. Technology Policy, Summer 1997. 2020: CRS analysis of Organisation for Economic Cooperation and

Development (OECD) data, Main Science and Technology Indicators, OECD.Stat.

Notes: Rest of the World includes the members of the OECD (less the United States), as well as Argentina,

China, Romania, Russia, Singapore, South Africa, and Taiwan. R&D expenditures by some others countries are

not included but are likely to be small in relative terms. In estimating total global R&D, CRS used the most

recent year’s reported R&D expenditures for three countries (Argentina, Singapore, and South Africa) that had

not reported data for 2020.

1 Alternatively, some nations have taken non-R&D intensive paths to economic growth, for example by serving as low

labor-cost locations for the manufacturing and service needs of other nations, by licensing or acquiring the intellectual

property needed for production activities, and by extracting and refining natural resources (e.g., oil, gas, minerals).

2 For purposes of this report, global R&D expenditures include those of the OECD countries, as well as Argentina,

China, Romania, Russia, Singapore, South Africa, and Taiwan. R&D expenditures by some others countries are not

included but are likely to be small in relative terms.

3 2020 is the latest year for which OECD R&D data is largely complete. It generally takes a year or two for national

R&D data to be collected and reported, then harmonized and published by the OECD.

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Global Research and Development Expenditures: Fact Sheet

In 2020 (the most recent year for which comprehensive data are available), global R&D

expenditures were $2.352 trillion.4 The United States continued to fund more R&D than any other

country. China, ranked second in 2020, funded more R&D than the next four highest countries

combined. The 10 largest R&D-funding countries of 2020 accounted for $1.999 trillion in R&D

expenditures, 85.0% of the global total; the top 20 R&D-funding countries accounted for $2.225

trillion, 94.6% of the global total. (See Table 1.)

Table 1. Countries with the Highest Expenditure on R&D, 2020

(in billions of current PPP dollars)

Rank

Country

Amount

Rank

Country

Amount

1

2

3

4

5

6

7

8

9

10

United States

China

Japan

Germany

South Korea

France

United Kingdom

Russia

Taiwan

Italy

720.9

582.8

174.1

143.4

112.9

74.6

56.0

48.0

47.9

38.2

11

12

13

14

15

16

17

18

19

20

Canada

Spain

Turkey

Australia

Netherlands

Belgium

Sweden

Israel

Switzerland

Poland

30.1

25.1

25.0

24.0

23.7

21.3

20.1

19.8

19.4

18.1

Source: CRS analysis of Organisation for Economic Development and Cooperation, OECD.Stat database,

https://stats.oecd.org/Index.aspx?DataSetCode=MSTI_PUB.

Notes: PPP = Purchasing Power Parity. PPP is used to determine the relative value of different currencies and to

adjust data from different countries to a common currency allowing direct comparisons among them. Australia,

Switzerland, and United Kingdom based on 2019 data.

Figure 2 illustrates R&D expenditures between 2000 and 2020 for the 10 countries with the

highest R&D expenditures.

Figure 2. R&D Expenditures of Selected Countries, 2000-2020

(in billions of current PPP dollars)

Source: CRS analysis of Organisation for Economic Cooperation and Development, OECD.Stat database,

https://stats.oecd.org/Index.aspx?DataSetCode=MSTI_PUB.

4 Includes OECD members, plus Argentina, China, Romania, Russia, Singapore, South Africa, and Taiwan.

(Organisation for Economic Cooperation and Development, OECD.Stat database)

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Global Research and Development Expenditures: Fact Sheet

Notes: PPP = Purchasing Power Parity. PPP is used to determine the relative value of different currencies and to

adjust data from different countries to a common currency allowing direct comparisons among them.

Trends in global R&D share between 2000 and 2020 for the 10 countries with the highest 2020

R&D expenditures are illustrated in Figure 3. Among them, six saw declines in share of global

R&D—the United States, Japan, Germany, France, the United Kingdom, and Italy—while four

saw their shares grow—China, South Korea, Russia, and Taiwan.

In 2000, China accounted for nearly 5% of global R&D, joining the United States, Japan, South

Korea, and the countries of Western Europe as the largest funders of R&D. In 2009, China

surpassed Japan to become the second largest funder of R&D. From 2000 to 2020, while China’s

share of global R&D rose from 4.9% to 24.8%, the U.S. share fell from 39.9% to 30.7% and

Japan’s share fell from 14.7% to 7.4%.

Figure 3. Share of Global R&D of Selected Countries, 2000-2020

Source: CRS analysis of Organisation for Economic Development and Cooperation, OECD.Stat database,

https://stats.oecd.org/Index.aspx?DataSetCode=MSTI_PUB.

Notes: Global R&D includes the expenditures of the OECD countries, Argentina, China, Romania, Russia,

Singapore, South Africa, and Taiwan. Share computed in PPP terms. PPP = Purchasing Power Parity. PPP is used

to determine the relative value of different currencies and to adjust data from different countries to a common

currency allowing direct comparisons among them.

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Global Research and Development Expenditures: Fact Sheet

Figure 4 illustrates the growth of R&D expenditures for each of the 10 countries with the highest

2020 R&D expenditures for 2000 to 2020 as a percentage of its 2000 R&D expenditures. During

this period, China had the highest growth in R&D expenditures (1,669%), followed by South

Korea (509%), Taiwan (423%), and Russia (357%).

Figure 4. Growth in R&D Expenditures Since 2000 for Selected Countries, 2000-2020

Source: CRS analysis of Organisation for Economic Development and Cooperation, OECD.Stat database,

https://stats.oecd.org/Index.aspx?DataSetCode=MSTI_PUB.

Author Information

John F. Sargent Jr.

Specialist in Science and Technology Policy

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Global Research and Development Expenditures: Fact Sheet

Disclaimer

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Congressional Research Service

R44283 · VERSION 15 · UPDATED

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