1980

7.7

1996

6.6

2004

5.9

1966

6.0

2007

6.3

2004

4.5

2008

6.7

2008

5.7

2011

6.4

1979

7.2

1970

5.0

2022

7.7

1992

6.7

2015

7.8

2024

6.0

2017

9.3

2017

7.6

1990

7.0

2019

5.5

2018

6.9