2002

8.4

1984

7.3

1980

8.4

2005

7.3

1987

7.7

1994

8.5

2000

7.7

1946

8.3

2008

8.1

1982

7.4

1948

8.2

1999

6.6

2009

7.6

1995

7.9

2001

6.1

2012

6.9

2007

7.4

2011

6.8

1944

7.6

1966

7.2