1996

6.7

1948

7.3

2021

6.2

2010

6.7

2011

6.3

2008

5.9

2010

5.8

2016

6.2

2009

4.8

1986

6.8

2018

6.1

2007

4.9

1981

7.2

2014

5.2

2014

5.5

2012

6.1

2009

5.8

1992

6.4

2007

6.1

2009

6.2