2003

0.0

2004

4.8

2002

6.5

1978

7.5

2004

7.7

2005

0.0

1984

7.5

1981

7.3

2002

0.0

2005

8.2

1999

7.9

2003

8.5

1992

7.7

1993

6.8

1985

7.7

2004

5.5

1990

8.3

1964

7.5

1971

7.8

1988

5.6