2002

6.4

1998

0.0

2006

6.0

2002

5.3

1993

5.7

1991

7.2

2002

4.5

1999

6.4

2005

6.3

2007

6.7

1990

0.0

2001

6.3

2003

5.1

2000

7.0

0.0

2000

6.4

2003

6.1

1969

6.6

1999

4.6

2003

6.0