1976

5.3

1975

5.5

1993

4.2

1978

1.7

2018

5.5

2013

4.7

1977

3.3

2013

1.5

1968

3.5

1993

5.5

1978

3.7

1968

4.8

2006

4.0

1972

10.0

1974

5.5

2009

3.5

2004

2.3

2001

3.8

2002

3.4

1999

3.2