1966

6.3

2016

6.4

2007

6.4

2012

6.4

1965

6.8

1962

6.9

1998

5.1

2013

5.7

2010

6.8

2017

6.5

2014

5.5

2009

5.6

1995

7.8

1931

5.8

1995

5.9

2015

6.8

2012

6.1

2020

5.5

2016

6.9

2010

6.4