2014

7.4

2009

6.1

2014

6.2

1987

7.0

1989

7.3

1996

5.6

1992

6.3

1992

0.0

2014

4.6

1973

6.8

1974

5.9

1972

6.2

2013

5.7

2007

5.0

1982

7.4

2014

5.2

2005

5.7

2006

4.2

2003

6.8

2014

5.4