2000

5.8

2013

0.0

2002

7.0

2006

7.2

1980

5.6

1985

7.5

1968

7.3

2003

6.6

2006

6.6

1999

6.5

1995

7.1

1992

5.2

2013

7.2

1917

5.5

1950

2.4

2009

5.2

1916

6.6

1916

6.2

2011

5.7

1970

5.5