2013

5.1

2006

4.7

2012

0.0

1987

7.3

1996

5.0

2005

3.5

2006

5.0

2009

1.5

1988

8.0

1986

6.4

1999

6.3

1994

6.0

1993

5.7

1991

7.3

1988

7.8

1986

7.5

2006

6.6

2006

2.5

2004

7.5

2004

2.9