2019 tables: Countries/territories

Table criteria

The 2019 tables are based on Nature Index data from 1 January 2018 to 31 December 2018.

2018 Country/territory Share 2017 Share 2018
1 United States of America (USA) 19858.41 20357.17
2 China 9224.27 11372.26
3 Germany 4425.41 4585.05
4 United Kingdom (UK) 3672.09 3750.3
5 Japan 3088.05 3082.69
6 France 2233.8 2200.83
7 Canada 1565.4 1620.19
8 Switzerland 1351.46 1422.71
9 South Korea 1292.86 1349.94
10 Australia 1097.22 1254.34
11 Spain 1104.08 1167.23
12 Italy 1035.9 1064.63
13 India 958.84 962.13
14 Netherlands 915.53 933.76
15 Sweden 605.28 634.35
16 Israel 587.71 617.86
17 Singapore 597.88 606.42
18 Russia 408.99 482.33
19 Belgium 404.78 421.43
20 Denmark 361.22 407.95
21 Taiwan 424.31 393.18
22 Austria 375.53 364
23 Brazil 260.78 307.53
24 Poland 219.33 236.27
25 Finland 194.62 216.68
26 Norway 189.38 200.32
27 Czech Republic 194.04 197.17
28 Portugal 134.66 166.24
29 Saudi Arabia 139.56 134.03
30 New Zealand 128.58 124.52
31 Iran 88.05 118.47
32 Ireland 125.66 109.65
33 Chile 100.23 108.05
34 Mexico 78.69 102.31
35 Argentina 97.74 100.71
36 South Africa 68.65 90.7
37 Greece 82.96 83.99
38 Hungary 77.02 79.44
39 Turkey 59.06 72.97
40 Slovenia 40.72 42.86
41 Thailand 37.47 40.71
42 Croatia 27.48 31.32
43 Iceland 26.77 28.62
44 Pakistan 39.64 28.56
45 Romania 21.2 23.52
46 Ukraine 21.38 21.78
47 Luxembourg 18.97 20.18
48 Colombia 17.27 17.41
49 United Arab Emirates 18.81 17.32
50 Vietnam 10.28 16.63

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.