1975

6.9

2011

7.1

1965

6.4

1965

6.8

1966

6.3

2022

7.9

1987

7.0

2017

6.6

1963

7.6

1951

7.2

2006

6.5

1992

6.3

1989

7.4

1995

5.9

1988

6.5

1971

6.8

2017

6.9

1966

6.5

2008

6.4

2006

5.1