Table:
field
world
united states
eu
china
japan
india

all articles
2290294
431623
638834
395588
103793
106574

agricultural sciences
2.2
1.2
1.9
2.1
1.6
3.1

astronomy
0.6
0.8
0.9
0.2
0.5
0.4

biological sciences
15.8
18.6
15.2
13.9
14.6
18.1

chemistry
8.1
5.4
6.7
12.5
9.5
12.5

computer sciences
8.9
6.5
9.5
9.7
7.9
14.2

engineering
17.1
11.7
14
27.8
17.2
18.4

geosciences
5.6
5.1
5.3
6.9
3.7
4.5

mathematics
2.6
2.1
2.7
2.7
1.8
2

medical sciences
22.1
28
24.1
12.4
27.5
15.9

other life sciences
1.2
2.3
1.2
0.2
0.3
0.2

physics
9
7.5
8.8
10.6
13.6
8.5

psychology
1.7
3.7
2.1
0.2
0.5
0.2

social sciences
5.1
7.2
7.5
0.8
1.2
1.9

Statement: researchers in the united states produced a proportion of publications in psychology was 4%.
Question: how many percent did researchers in the united states produce a proportion of publications in psychology?
Answer: [3.7]