1996

7.7

1986

8.3

2007

8.5

1990

6.9

1984

8.4

2019

8.5

2019

8.4

2017

7.9

2006

8.1

1999

6.7

2015

8.2

2021

8.3

2013

8.7

2008

8.3

2019

8.5

2002

7.9

2011

8.6

2009

8.7

2011

8.5

2002

8.4