2012

7.4

1983

6.9

2020

7.0

1998

8.1

2015

7.3

2014

8.5

2016

7.9

2014

7.4

1980

8.2

2018

7.5

2009

7.6

2001

7.9

1972

8.7

2017

7.6

2016

7.3

2015

7.5

2004

7.7

2005

8.1

1987

7.3

1994

8.7