2005

6.6

2004

6.3

1984

7.2

2006

6.6

1994

6.2

1942

7.8

2001

5.4

1994

6.8

2002

6.7

1968

7.3

1970

7.2

1991

7.5

1960

6.4

2002

7.0

2004

6.7

2005

6.0

1995

6.4

1953

7.0

1996

7.3

1962

7.3