1999

5.9

1991

6.2

2006

6.6

1998

6.0

2002

4.6

1989

5.4

2009

6.1

1966

6.1

1996

5.3

1982

6.9

2007

6.5

1985

5.8

2005

6.6

2000

6.3

1994

7.9

2003

8.5

2001

5.5

2022

7.3

1987

5.5

2002

6.3