1990

6.9

2022

6.0

1992

8.2

2004

6.6

2006

6.4

2017

7.9

2018

7.0

1996

8.1

2011

8.1

2004

6.9

2004

8.0

2015

6.1

2014

8.4

2009

8.0

1973

6.9

2008

7.6

2003

7.4

2016

7.1

2015

6.4

1993

8.1