1959

7.0

1987

5.3

2017

6.5

1996

8.0

2018

6.7

1980

5.9

2013

6.4

1966

7.0

2012

6.3

1997

5.4

2016

6.8

2020

6.7

2020

7.3

1966

6.2

1974

5.9

1968

6.9

1997

6.1

2012

9.3

2012

5.4

1978

4.2