2001

7.9

1994

8.7

2018

8.0

2016

5.9

2015

6.0

2010

6.8

2015

7.5

1953

7.2

2015

6.3

1988

6.5

2019

6.2

2009

7.0

1977

8.2

2019

8.1

2017

6.1

2014

7.5

1971

6.0

2017

7.0

1993

7.8

2012

7.7