0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
United States
2.62
2.81
2.62
2.81
EU
1.67
1.97
1.67
1.97
France
2.09
2.19
2.09
2.19
Germany
2.4
3.04
2.4
3.04
United Kingdom
1.63
1.66
1.63
1.66
China
0.89
2.15
0.89
2.15
Japan
2.91
3.21
2.91
3.21
South Korea
2.18
4.55
2.18
4.55
2000
|
2017
|
