2018

6.7

1987

7.0

1983

7.3

2007

4.8

2014

6.1

1977

5.9

1995

5.4

1985

5.5

1994

4.8

2012

5.6

1972

7.1

2016

4.5

2013

7.5

1956

7.1

2017

7.7

2015

7.2

1993

5.0

1954

7.2

2015

6.7

1962

7.3