2004

9.5

2006

7.3

2006

8.2

2016

7.0

2001

8.1

2017

7.7

2019

8.7

1994

8.4

2003

8.1

2004

7.6

2002

7.5

1976

7.9

1984

7.0

2017

7.2

2009

8.0

1980

8.6

2015

7.8

2020

7.9

2017

7.5

2019

7.6