1995

7.6

1985

8.3

1999

7.1

1989

6.9

1991

6.3

1993

5.5

1966

7.5

1966

6.0

1966

7.3

1966

7.4

1966

5.7

1967

6.4

1973

7.2

1965

6.2

1965

7.3

1965

5.7

1965

7.3

1966

7.8

2013

3.6

1982

8.1