2018

4.0

1973

5.0

1977

5.4

2016

6.7

1999

4.6

1984

7.2

2020

5.8

2011

7.3

5.7

2003

6.8

2002

9.1

2013

6.6

2001

6.8

1998

5.7

7.3

2015

6.5

1980

5.9

2012

6.0

2002

10.0