2002

6.0

2007

8.1

2001

5.6

2007

8.0

2008

7.5

1973

7.9

2008

6.9

2007

7.1

1977

7.7

2005

6.9

2007

7.0

2006

5.2

2021

5.9

1987

6.6

1998

7.5

2000

5.8

2003

6.3

1992

6.6

1979

6.7

1984

6.8