1984

6.7

2014

5.6

2020

7.2

2019

7.6

2014

6.8

1980

5.4

2022

3.8

1966

6.1

2017

8.6

6.6

2011

7.3

2009

7.6

2017

5.9

6.6

1964

7.4

2003

6.9

1984

7.6