1958

5.0

1996

7.3

1953

7.8

1958

7.5

1963

7.3

2004

7.0

1962

7.9

2006

7.1

2002

7.0

2006

6.7

1966

5.8

1999

7.7

2001

4.0

2000

6.1

1989

0.0

1994

7.6

1993

6.5

1976

7.2

2004

7.8

1974

4.5