1944

0.0

1997

5.9

2017

7.3

2001

7.6

2003

7.1

2009

7.2

2006

5.0

1996

6.9

2001

6.8

2006

6.9

1959

6.1

2007

6.7

2008

6.6

1979

7.0

1982

8.0

2006

7.1

2007

6.9

2000

6.9

2004

6.4

2019

4.0