2000

3.2

2005

7.3

1999

7.7

2006

6.0

1996

6.5

2023

7.7

2005

7.1

1997

3.0

1991

7.8

2007

6.9

1996

7.6

2004

6.8

2002

7.7

1984

6.7

2002

6.6