2015

8.4

2016

6.5

2009

4.8

2010

7.0

2012

9.3

2015

8.5

1999

5.3

2003

4.9

1976

5.2

2006

5.0

2008

7.8

2000

7.1

2012

8.5

2019

5.3

1994

7.5

2016

7.0

2012

7.7

2006

5.5

2005

5.1

1983

5.8