1986

4.5

1929

6.5

1953

7.7

1989

7.2

1972

7.4

1993

6.9

1994

7.1

1996

6.7

2004

7.3

1989

7.2

2000

7.2

1996

7.3

1918

10.0

1931

0.0

1994

6.8

1964

6.0

1971

0.0

1972

0.0

1981

7.3

1980

3.2