1980

6.0

1960

6.0

1995

6.3

1968

0.0

1986

6.2

2006

5.4

1955

6.6

1995

5.9

2005

7.5

1950

8.1

1963

0.0

1932

7.0

2015

0.0

2008

6.7

1966

6.0

1983

4.5

1955

7.3

1996

8.0

1965

0.0

1975

3.5