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2020 tables: Countries/territories

Table criteria

The 2020 tables are based on Nature Index data from 1 January 2019 to 31 December 2019.

2019 Country/territory Share 2018 Share 2019
1 United States of America (USA) 20357.17 20152.48
2 China 11372.26 13566.11
3 Germany 4585.05 4545.7
4 United Kingdom (UK) 3750.3 3773.66
5 Japan 3082.69 3024.32
6 France 2200.83 2238.55
7 Canada 1620.19 1602.09
8 Switzerland 1422.71 1487.88
9 South Korea 1349.94 1435.23
10 Australia 1254.34 1259.95
11 Spain 1167.23 1161.51
12 India 962.13 1041.49
13 Italy 1064.63 1027.54
14 Netherlands 933.76 929.93
15 Sweden 634.35 624.89
16 Israel 617.86 609.23
17 Singapore 606.42 607.95
18 Russia 482.33 466.02
19 Belgium 421.43 412.22
20 Denmark 407.95 386.58
21 Taiwan 393.18 371.77
22 Austria 364 367.54
23 Brazil 307.53 280.24
24 Poland 236.27 250.05
25 Czech Republic 197.17 229.8
26 Norway 200.32 228.73
27 Finland 216.68 218.4
28 Portugal 166.24 144.6
29 Saudi Arabia 134.03 135.5
30 New Zealand 124.52 131.21
31 Chile 108.05 118.07
32 Ireland 109.65 116.83
33 Iran 118.47 112.21
34 Mexico 102.31 94.71
35 Argentina 100.71 92.63
36 Greece 83.99 85.17
37 South Africa 90.7 82.15
38 Hungary 79.44 79.64
39 Turkey 72.97 64.51
40 Thailand 40.71 49
41 Slovenia 42.86 46.54
42 Colombia 17.41 28.01
43 Estonia 16.33 25.87
44 Iceland 28.62 25.26
45 Romania 23.52 24.19
46 Ukraine 21.78 23.24
47 Luxembourg 20.18 21.34
48 United Arab Emirates 17.32 21.11
49 Croatia 31.32 20.93
50 Slovakia 10.11 18.96

Each year, the Nature Index publishes tables based on counts of high-quality research outputs in the previous calendar year. Users please note:

  1. The data behind the tables are based on a relatively small proportion of total research papers, they cover the natural sciences only and outputs are non-normalized (that is, they don’t reflect the size of the country or institution, or its overall research output).
  2. The Nature Index is one indicator of institutional research performance. The metrics of Count and Share used to order Nature Index listings are based on an institution’s or country’s publication output in 82 natural-science journals, selected on reputation by an independent panel of leading scientists in their fields.
  3. Nature Index recognizes that many other factors must be taken into account when considering research quality and institutional performance; Nature Index metrics alone should not be used to assess institutions or individuals.
  4. Nature Index data and methods are transparent and available under a creative commons licence at natureindex.com.

The Nature Index database undergoes regular updating, corrections, adjustment of institutional hierarchies, and removal of retracted papers and thus the live website can differ from the frozen annual tables.

*The change in adjusted Share accounts for the small annual variation in the total number of articles in Nature Index journals. Share values have been adjusted to 2019 levels to calculate the percentage change. For more information on the adjustment, please see the Adjusted metric explainer.