1969

3.5

2001

5.1

1993

7.7

2002

5.5

1968

7.6

1988

7.1

2024

6.6

1976

5.6

2009

7.5

2004

5.5

1975

5.5

1993

0.0

2007

4.2

1981

8.5

2003

7.8

2006

7.4

2009

6.5

2004

1.6

2005

6.5

2014

6.3