2018

6.8

2017

8.3

2004

8.0

1981

8.6

1967

7.5

1974

8.1

1998

7.5

2016

5.9

2015

7.6

1982

8.3

1998

7.0

1987

7.6

2005

7.0

2021

8.8

2014

7.8

2019

8.5

2010

8.1

2011

8.5

1995

8.6

2019

8.0