2003

5.7

2009

8.5

1963

7.0

2006

7.0

2021

6.2

2011

6.3

1975

4.5

5.0

2010

6.9

1967

6.6

2012

6.1

1968

7.2

2001

6.8

1993

5.5

2002

6.6

1993

5.4

2010

6.7

1996

6.9

2007

6.9

2014

5.6