1966

6.3

1968

7.7

1954

6.1

1949

6.9

1999

6.8

1993

6.3

1965

6.7

1950

6.8

2003

6.3

1955

7.2

1954

5.4

1963

6.9

1964

6.6

1953

6.6

2001

6.8

1962

7.0

1965

6.2

1956

6.5

1967

7.1

1968

6.2