1955

7.0

1996

6.1

2001

6.6

1982

0.0

1968

2.0

2000

0.0

2002

7.1

1948

7.9

1961

7.3

2005

6.8

1971

0.0

1989

7.2

1996

6.8

1966

7.3

1934

5.0

1944

6.8

1929

6.6

1992

7.5

1929

7.5

1953

7.7