2002

5.4

2010

9.1

2011

7.2

1996

5.7

2008

6.8

2001

5.2

2013

6.6

1972

4.0

1988

6.5

2008

7.4

2014

7.2

1993

6.4

2015

6.2

2000

7.2

1997

5.1

2011

5.0

2012

7.1

2012

7.2

1978

6.8

2021

9.2