2017

7.3

1979

6.2

1989

6.0

2012

7.0

2018

7.0

2019

6.6

1972

7.4

1983

4.5

1931

7.1

1991

7.3

1960

7.5

2009

7.4

1962

7.9

2006

6.4

2016

7.6

1969

7.1

1960

7.8

1993

6.3

1975

8.1

2018

6.5