2001

7.8

1980

7.3

1997

6.6

1999

6.3

2002

6.0

2004

7.5

1975

7.8

2005

7.1

2005

5.4

1993

6.5

1991

4.7

1982

6.6

1976

7.3

1970

7.6

1992

6.7

1980

6.0

1993

6.6

2020

5.3

2022

4.0

1966

4.8