2018

6.2

2003

7.4

2009

7.2

1968

8.1

2019

8.1

2019

6.0

1984

7.5

2004

7.9

2019

8.2

2010

8.4

2014

8.5

2017

7.2

2015

7.6

1980

8.4

2015

7.8

2019

7.4

2014

7.9

1980

8.2

2011

7.6

2020

8.1