2006

10.0

2005

5.8

2013

8.4

2002

10.0

2009

8.5

1978

6.9

2007

7.5

1999

5.2

1973

9.2

2021

6.2

2014

7.4

1994

7.3

1984

7.1

2008

5.6

1983

6.7

1984

6.2

2018

5.6

2013

8.3

2015

5.5

2010

6.4