1975

7.4

2005

6.9

2002

7.0

1991

7.5

1930

7.2

1987

5.2

2007

6.6

1950

7.8

2013

7.8

1996

7.9

1967

6.7

1999

5.8

1985

6.1

1955

5.0

2022

6.2

1997

6.8

1969

5.8

1966

5.0

2009

6.5

1983

5.4