1990

7.8

2003

7.6

1994

7.4

1998

6.9

1958

5.3

0.0

1993

7.0

1992

7.4

1995

6.5

1961

8.1

1972

7.3

1937

6.0

2001

7.5

1993

7.4

1995

7.3

1943

7.7

1975

7.5

1978

6.7

1975

7.5

1956

6.7