1969

7.6

1962

7.0

2005

7.2

1991

7.6

2004

7.2

1963

7.1

1964

7.4

1965

6.7

2007

6.2

1996

6.5

1967

6.6

1969

6.6

2003

8.2

2001

6.9

1947

7.6

1986

8.0

1971

6.4

1974

6.5