2012

7.0

1998

7.6

2007

7.8

2014

7.4

1983

6.9

1995

7.7

2011

7.5

2001

7.2

1997

8.0

2020

7.7

2007

7.8

2020

8.2

2013

8.2

2016

7.9

1960

7.1

2019

7.0

2020

8.5

2015

7.9

1999

8.7

1998

8.6