2012

7.4

1983

6.9

2020

7.0

2008

7.6

1997

7.9

2014

6.1

2018

8.2

2017

7.3

1987

7.8

1964

7.4

1990

7.5

2010

8.2

1980

7.9

2014

8.5

2000

7.4

2015

7.6

2012

7.1

1996

8.0

1987

8.1

2014

8.0