2020

9.8

2014

6.8

1996

7.4

2014

7.4

1992

6.7

1996

7.8

1982

7.1

1969

7.3

1997

7.5

2018

7.2

2007

7.7

2011

6.0

2016

6.8

2013

8.0

2008

8.1

2020

8.8

2011

8.4

2015

8.7

2016

7.7

2006

7.9