1985

7.0

1989

6.1

1973

3.3

2013

5.5

1974

7.4

1972

3.0

1975

7.8

1999

6.5

1972

6.3

2006

6.9

1986

5.9

2017

4.9

2014

6.6

1940

6.5

2006

6.5

2003

5.5

1993

7.2

1966

6.0

2011

3.8

2011

4.4