1986

6.0

2009

5.6

2001

7.8

2010

6.3

2001

7.9

2013

6.9

2017

7.2

1992

7.7

2019

7.1

2016

6.9

2012

6.9

2018

6.8

2018

7.5

2016

7.3

1941

7.0

2014

7.1

2017

6.8

2015

6.7

1999

7.6

2012

7.1