2017

5.9

5.3

1989

5.8

2019

7.7

6.0

2007

5.7

2011

5.6

1945

7.2

2012

7.2

1987

6.2

1991

6.6

2003

7.0

2011

6.4

2012

5.5

2006

7.0

1981

5.0

1993

5.5

1988

6.2

2009

6.2

2016

6.7