2009

7.2

1995

6.9

1951

6.1

1981

0.0

1926

4.3

1950

5.9

1956

5.1

1963

5.7

1988

4.9

1985

6.7

2007

6.4

2008

7.7

2006

5.8

2005

7.2

1994

6.2

2006

7.6

2002

6.1

2008

7.1

2004

7.5

2002

7.1