2001

7.8

1997

6.5

1963

7.0

2003

6.5

2004

7.9

1977

1.0

2007

0.0

1995

5.8

1994

7.8

1996

6.2

2004

6.2

2005

6.2

1963

5.7

2000

5.2

2007

7.5

1978

3.2

1992

5.9

1957

7.7

1973

7.1

1998

6.2

1993

7.9

2001

7.6

1995

7.8

1995

6.5

1962

6.9

2000

4.8

1964

8.0

1957

5.7

1974

7.5

1994

7.1