2006

4.1

2003

4.1

2003

5.1

1978

7.0

2006

2.8

2004

5.4

2009

5.3

2006

4.6

2003

3.1

1940

6.3

1979

4.5

1985

7.7

2000

7.6

1996

6.4

1984

7.2

2002

7.5

1987

6.5

1999

7.6