1970

3.3

1971

0.0

1993

5.5

1972

4.2

2003

1.8

2000

4.8

1985

2.0

2002

4.0

1982

4.1

2011

7.0

2003

0.0

2002

0.0

1997

5.2

1999

5.3

1996

4.6

1997

4.7

1970

2.3

2003

5.7

1979

6.0

2006

5.0