1895

5.4

1999

5.9

1982

6.9

2006

5.5

1939

7.3

2015

6.0

2008

4.9

1970

6.1

2012

5.5

2010

6.0

2020

7.3

2011

5.2

2009

7.4

2012

6.4

2019

6.7

1990

5.7

1997

6.2

1980

6.7

1993

6.3

2016

6.7