1992

6.8

2001

6.0

1998

7.5

2012

8.5

1977

8.1

1988

7.8

2017

7.2

2019

8.5

2022

8.2

2005

7.3

2006

8.2

1996

8.0

2018

7.3

2003

5.5

1999

5.7

2014

10.0

2010

8.1

2018

6.3

2015

4.0

2016

8.5