2000

7.2

2019

5.4

2009

7.4

2007

7.5

2010

5.2

2013

7.6

2008

6.3

2012

6.2

2009

7.2

1971

6.8

2019

5.7

2005

8.5

2012

6.9

2015

4.6

2003

5.9

9.7

2004

7.7

2004

4.2

1977

6.3

2014

5.9