2002

5.7

1977

6.8

1965

8.3

1999

8.1

2005

6.2

1994

8.2

1986

7.9

1997

6.2

1991

5.7

1989

7.9

1998

7.0

2002

6.2

2006

0.0

1961

6.8

1983

7.9

1998

7.8

1999

6.4

2004

5.4

1993

7.9

2004

0.0