1978

6.2

1988

5.8

1989

0.0

1975

0.0

1977

6.1

2000

4.5

2012

6.0

1976

4.8

2009

3.5

2005

4.3

1980

6.6

2018

6.0

2001

6.2

2020

0.0

1987

5.0