2006

7.7

1993

7.9

2016

7.8

1999

7.9

2004

8.2

1995

6.4

1972

7.9

2008

7.8

1997

8.3

2018

7.3

2011

7.6

2005

7.0

2015

6.3

2004

7.9

2006

8.0

1990

7.4

2014

8.1

1994

6.8

2010

6.4

2006

8.2