1956

7.0

2010

6.4

2001

6.1

2009

7.5

1995

5.7

2011

6.2

2012

6.3

2006

7.8

1999

5.3

2004

7.3

2004

8.0

2009

6.1

1991

6.2

2010

7.7

2003

6.8

2014

5.9

2006

7.0

2007

7.7

2021

6.0

2012

7.8