2006

7.4

1969

4.3

2003

7.8

1968

7.6

1995

0.0

2002

4.1

1988

7.1

2009

7.5

1993

7.7

2002

5.5

2001

5.1

1999

5.5

1988

3.6

1995

3.8

2004

1.5

1969

4.1

2004

3.7

1969

6.5

1977

5.6

1969

4.5