1990

6.9

2004

9.5

2020

7.6

1990

7.8

2004

8.5

2010

7.4

2016

7.5

2021

7.1

2020

8.6

1992

8.5

1998

6.8

2017

7.9

2015

8.3

2014

7.4

2003

7.7

1988

6.5

2019

8.8

2015

7.7

2011

6.7

1984

8.4