2011

5.8

1973

6.8

2008

4.6

1989

4.5

2009

5.3

1988

0.0

1996

6.7

2007

5.0

2007

6.4

2005

6.0

2014

5.4

2005

7.4

2001

5.6

1972

6.2

1990

7.6

1992

7.9

1988

5.4

2009

4.4

1996

6.3

2010

5.9