2002

9.1

1988

6.4

2013

5.7

2014

6.8

1979

6.1

2004

6.5

2011

6.2

2004

6.0

2002

6.5

2012

6.9

2010

5.5

2008

7.1

1998

6.6

2008

6.1

1990

5.9

1989

5.2

2009

7.2

2008

6.2

1989

6.6

2008

6.7