1999

6.5

2014

7.9

1990

8.5

2019

7.4

2019

8.5

2014

8.4

2010

8.4

1982

7.9

2021

8.0

2011

8.3

2015

7.5

2009

7.6

2013

6.3

2016

7.6

1998

8.1

2004

8.1

2001

7.9

2014

6.5

2016

7.9

2017

7.2