7.8
en
2021
8.3
ko
2020
9.0
2025
7.5
zh
7.7
ja
7.9
2024
8.0
1998
1990
8.2
2017
5.0
2018
6.2
8.7
8.6
N/A
8.5
1986
8.8
2019
es