2004

3.5

1995

4.0

2007

2.0

1962

0.0

2003

6.2

2009

8.0

1997

7.0

1968

0.0

2020

5.8

1999

0.0

1982

0.0

2011

5.0

2002

5.7

1996

6.4

2012

6.5