1975

6.7

1992

6.3

1960

7.3

1974

6.2

1973

4.8

1997

6.4

2003

5.1

1977

6.6

1975

6.8

1949

7.1

2008

6.1

1981

6.7

2025

0.0

2017

8.5

2007

4.5

1979

6.7

1977

6.8

1976

5.6

2004

6.6

1960

7.8