1932

7.0

2002

7.2

1984

5.9

1989

4.2

1970

5.5

2005

6.4

1996

7.5

1996

6.9

1986

6.6

2007

6.5

1975

5.7

2006

7.4

1986

7.3

1968

5.1

1976

4.0

2000

5.4

1967

5.7

2002

6.9

2007

7.4

2002

5.9