1954

5.3

1996

3.7

1953

4.5

1960

4.3

1965

6.0

1961

5.1

2000

7.2

1956

5.3

1953

7.4

1960

6.4

1950

6.0

1961

4.8

1978

9.2

1961

6.3

1966

10.0

1955

7.9

1964

7.5

1957

4.7

1960

5.2

1977

6.5

1960

5.4

1977

4.3