1990

7.4

1984

8.5

2004

9.5

2002

7.6

1998

7.5

2012

6.7

2016

10.0

2016

8.9

2010

7.8

1995

7.2

2010

7.2

2014

6.5

2008

8.1

1979

7.5

2022

9.0

1991

7.4

2021

7.7

1969

7.8

2020

7.9