1999

7.4

2011

6.8

2022

6.0

2015

8.3

1992

6.8

2006

8.0

2017

6.8

2005

7.5

1999

8.1

2011

8.5

1988

7.6

2012

6.9

2001

8.4

2007

6.5

2014

10.0

2003

8.9

2017

8.3

2013

8.1

2021

10.0

2013

8.4