1981

5.8

2005

6.5

1982

7.9

1967

7.4

1979

8.2

1966

7.1

2025

0.0

2007

6.9

2008

6.1

2005

6.7

1902

7.9

1984

6.2

2004

7.2

1990

7.3

1987

6.5

1968

7.7

1956

6.6

2004

6.9

2008

6.5

1962

3.0