2007

6.8

1988

0.0

2001

4.6

1991

0.0

1986

0.0

1992

2.8

1992

1.0

1991

5.8

1996

7.5

1993

5.6

2006

4.8

1992

4.9

2011

8.1

2002

6.1

1994

5.1

1997

6.0

1998

4.8