2000

4.2

1995

5.9

1963

7.7

2016

7.4

2020

6.7

2018

6.7

2016

7.2

1992

7.3

2014

6.4

1988

6.9

2015

7.5

2021

8.4

2017

6.9

1989

5.1

1992

4.3

2003

5.8

1995

7.4

2024

5.9