1985

6.4

2016

4.2

1964

7.5

2000

6.1

1962

7.6

1986

6.8

1989

6.7

1969

7.6

2022

4.5

1977

6.3

1924

6.5

1970

7.2

2007

5.5

2011

6.9

2014

6.5

2008

6.3

1976

6.7

2001

6.4

1959

6.6

2002

6.3