2009

7.3

2005

8.1

1996

7.4

1995

10.0

1971

6.4

2005

2.0

2025

0.0

2007

6.9

2010

8.0

2013

7.5

2017

7.1

1978

5.0

1983

6.4

1990

6.8

1974

7.6

2002

2.5

2014

6.8

2002

7.5

1968

5.2

2016

0.0