2011

3.0

2010

7.7

1991

5.9

2013

6.9

2007

4.8

5.0

1957

6.9

2010

7.1

6.4

2023

6.2

1990

6.3

2003

6.0

2006

6.9

2015

6.4

2002

4.6

2005

6.0

2013

6.1

2005

6.8

2001

6.9

2010

6.1