1966

8.0

1957

8.2

1986

7.5

2021

6.5

1982

6.0

2001

7.0

2014

5.3

1953

5.9

1967

7.9

1968

7.0

2007

6.3

2006

6.7

2010

6.4

1988

6.8

1964

6.6

2006

5.8

2001

4.2

2010

6.1

2018

5.9

1987

5.5