2009

6.8

1995

7.3

2005

6.2

1971

6.7

1972

6.8

1973

6.8

1983

7.3

2005

6.8

2016

7.3

2002

6.9

1942

7.5

1985

0.0

1932

0.0

1971

5.8

1943

5.4

1969

6.3

2008

6.6

2010

6.6

2008

6.8

2008

6.4