2010

10.0

2009

6.9

2005

7.4

2006

8.5

1998

8.6

1996

6.0

1962

5.5

1990

6.6

1995

8.4

2011

9.8

2015

7.9

2015

8.5

2015

7.2

2015

8.3

2015

9.0

2012

0.0

2013

6.7

2008

6.3

2012

6.7

2015

7.6