2011

6.6

2014

6.9

1999

5.9

1955

7.2

1991

6.2

2003

6.8

2017

6.9

2006

6.0

1976

6.3

1940

6.3

1969

6.6

2004

6.4

2012

5.8

2012

9.7

2016

6.7

2019

7.0

1998

6.5

1993

6.1

2011

9.8