1995

1.0

2009

8.1

1983

6.6

2006

6.5

1947

0.0

1988

4.2

2017

4.4

2002

6.0

2000

4.7

2003

6.0

2001

6.6

2000

6.8

1995

7.3

2003

6.3

1971

6.7

1973

6.8

1999

5.3

2006

5.8

1952

7.6

2007

5.4