1970

6.0

2010

6.0

2010

7.5

5.6

1969

8.3

2006

5.4

1998

5.1

2016

6.4

2005

5.8

2020

5.5

2013

6.7

1931

5.8

2011

5.6

1969

5.5

2014

6.2

2018

5.0

2003

6.9

2015

5.5