1990

6.4

2018

6.0

1967

6.5

1994

7.4

1984

9.2

1979

7.6

1987

7.1

2020

6.3

2006

6.4

2010

6.8

2013

8.4

1995

6.6

1973

9.2

2007

7.5

2013

8.4

1970

7.6

2010

7.3

2024

7.4

2001

8.9

2014

7.4