1983

6.4

2014

8.4

2008

8.1

1972

8.7

2021

7.8

2018

7.4

1997

7.9

2019

8.5

1985

8.3

2022

7.7

2008

7.5

1978

7.6

1994

8.7

2006

8.2

1982

7.9

2010

8.2

1988

7.4

2013

6.8

2017

7.5

2016

7.6