2003

7.8

1995

7.3

1995

7.3

1968

7.6

2000

7.1

1968

2.7

2001

6.8

1977

7.4

1991

6.0

2007

6.9

2001

6.9

2002

6.1

1975

5.5

2003

6.6

2006

5.1

1998

0.0

1988

5.9

1999

5.5

1976

4.3

1970

7.2