2001

5.1

1989

5.0

1975

5.5

1976

5.7

1989

3.1

2006

7.4

2003

7.8

1968

7.6

1999

4.2

2012

1.0

1969

6.5

2004

1.5

2007

5.9

1977

5.6

1993

7.8

2002

5.6

2009

7.5

1970

2.0

2024

0.0

2009

6.5