2005

6.3

2003

7.2

1964

7.1

1994

7.4

2001

6.2

1972

7.1

2001

7.4

1997

6.9

1962

8.0

1998

6.4

2004

1.0

2005

6.8

1997

6.6

1991

0.0

1967

4.4

1999

5.6

2003

0.0

2006

7.4

1986

6.7

2001

6.7