2019

3.6

1991

7.7

2007

7.5

2004

7.4

1995

5.4

2006

8.2

2010

7.9

2005

7.0

2000

7.6

2005

7.9

2002

0.0

1973

7.2

2003

0.0

2004

0.0

2002

0.0

2002

0.0

2008

0.0

2003

0.0

2006

0.0

1997

7.7