2003

5.7

1988

5.9

2012

5.1

1994

5.2

2010

7.7

2011

5.7

2007

7.7

2005

7.8

2004

8.0

1990

6.5

1955

7.1

2006

5.5

2001

7.7

2002

5.6

2017

7.4

2015

6.8

1995

6.9

1996

7.2

1999

7.4

2011

5.4