2004

1.0

2006

5.5

1993

5.1

1996

4.7

1996

7.3

1940

7.9

1958

8.2

1971

6.8

2001

6.2

2021

9.0

1981

7.4

1997

6.6

2008

6.1

1981

6.6

2005

5.6

1999

6.7

2006

5.2

1996

6.0

2004

7.2

2002

5.5