1983

7.2

2021

8.5

2013

8.4

1986

7.7

2017

8.2

2005

6.1

2009

8.5

2004

5.0

2001

8.4

1987

7.8

2002

7.5

2020

8.3

1962

7.8

2012

7.9

2020

8.2

2007

7.6

2008

7.6

1990

6.9

2016

8.6

2003

7.7