1970

6.5

1963

5.1

1966

4.7

1966

7.3

1963

6.6

1973

6.6

1963

2.3

2005

7.2

1974

6.0

1989

7.3

1975

4.6

1964

5.8

1963

7.2

1968

6.7

1974

6.2