1995

1.0

1989

6.4

1993

7.4

2017

6.3

1992

7.5

2000

6.5

2004

6.1

2006

5.4

2009

0.0

2004

7.6

1930

7.2

1988

4.9

1975

7.7

2008

7.3

2001

7.4

1995

6.4

1965

5.5

1953

6.9

1980

6.7

2005

4.6