2003

6.8

2006

6.7

1969

6.6

2007

6.9

2005

6.2

2002

4.6

1998

6.1

1942

7.5

2006

5.8

2020

9.0

2007

5.3

2007

5.0

2016

6.1

1990

6.1

1997

7.1

1967

6.4

1992

6.5

2005

6.7

2004

6.9

2006

7.1