1960

6.1

1981

0.0

1977

6.0

1990

7.7

2019

7.3

1997

4.8

1982

6.7

1953

7.0

1972

7.6

1992

5.7

2018

6.1

1983

6.6

1976

7.0

1997

6.1

2004

5.6

1973

7.5

2006

6.7

1995

5.9

1964

6.2

1984

5.9