2013

0.0

1988

7.1

2005

5.9

2002

6.8

1983

5.2

1992

7.1

1974

7.1

2007

1.0

1986

6.1

2000

6.9

1975

5.5

1976

6.6

2007

6.4

1983

4.4

1983

7.3

1980

6.3

2000

5.2

1986

6.7

1999

6.5

2000

6.3