1981

7.2

2005

6.5

1984

8.0

1987

7.5

1997

8.3

1959

8.0

0.0

2017

5.9

1937

7.0

2018

6.8

2004

8.4

2016

0.0

2014

5.8

1996

6.3

1973

6.8

2005

6.2

2006

7.0

2002

7.0

2019

6.0

2020

6.3