1998

6.2

1993

6.6

2007

5.4

1977

6.0

1986

1.5

2006

0.0

2003

4.9

2021

0.0

2012

7.7

1972

3.8

2005

0.0

1993

0.0

1986

6.3

1988

6.8

1985

7.0