2009

3.8

2005

6.0

1998

7.3

0.0

2010

4.6

2007

6.6

1995

7.7

1978

7.5

1966

2.5

2018

2.3

1985

8.3

2002

6.2

2017

6.2

2013

0.0

1996

7.0

2007

6.4

2006

6.3

2001

7.4

1991

5.9

2014

6.0