2010

9.1

2013

6.0

2007

10.0

2014

7.9

6.0

2011

9.6

1971

6.8

1999

7.2

1969

4.9

2006

6.6

2007

8.2

2002

8.7

2010

6.2

1993

5.4

1982

7.6

2014

5.3

2004

6.6

9.0

2018

5.9

1966

6.1