1992

6.8

2013

8.7

1990

6.9

2010

7.5

2013

8.7

1996

7.7

1999

8.1

1995

7.2

2013

6.5

2008

8.3

2004

8.3

2017

8.5

1998

8.6

1997

8.0

2002

8.2

2011

7.6

2023

8.5

2014

8.4

2019

8.2

2021

8.2