2006

5.4

1997

6.6

1994

2.3

2014

6.8

2003

6.0

2006

6.2

2009

7.6

1942

6.9

2001

5.8

1994

4.4

2011

5.9

1990

7.3

2004

5.2

2011

6.4

1984

4.7

2014

6.4

1959

3.8

2005

6.0

2006

7.0

2008

3.3