2005

6.3

2004

6.3

1984

7.2

1993

6.2

2015

6.0

1984

6.6

1997

7.7

1994

6.3

1989

6.0

2001

5.4

1944

7.6

1994

6.8

2002

6.7

1961

7.3

1989

6.9

1973

6.5

1996

7.3

2005

6.7

1953

7.9

1980

7.3