1949

6.2

2010

6.2

2001

6.0

1972

6.5

2003

4.8

2008

6.2

2007

3.0

1993

4.5

1998

6.1

2003

7.0

2013

6.5

2012

6.5

1929

5.1

2011

9.8

2013

6.3

6.6

1981

3.0

1964

6.0

2013

4.8