1979

6.2

2016

4.2

1969

6.3

1975

3.5

1982

3.2

2001

5.8

1976

2.3

1995

6.4

2003

2.8

2006

6.0

1968

2.0

2021

5.7

1972

0.0

1972

4.3

2013

3.7

2019

0.0

2002

1.0

2013

4.4

1999

6.0

2009

6.5