2020

6.3

2009

5.9

1990

6.1

1966

6.3

2011

6.6

2017

6.2

2003

6.8

1996

5.8

2019

8.7

2019

6.5

1944

5.4

2010

7.1

1994

6.2

2015

6.5

2003

5.7

1978

5.9

2006

6.1

2004

6.4

2016

6.1

2008

6.2