1974

6.0

1992

6.0

2007

2.8

1997

1.0

2017

5.0

2018

4.2

2016

6.4

1986

4.9

1973

0.0

2005

5.2

1980

5.3

2007

5.8

2022

0.0

1975

0.0

2012

4.2

2002

5.1

1968

5.7

2006

3.5

1969

3.9

1972

3.0