1995

4.6

1987

7.2

1955

7.2

1971

8.2

2018

6.1

1985

7.2

1997

6.2

2004

6.9

1980

7.1

2002

6.5

1999

7.2

2021

6.4

1999

7.4

1971

6.4

1925

7.1

1971

6.1

2010

7.3

1950

8.3

1996

5.8

1981

6.8