2016

6.8

1988

6.7

2018

7.3

1987

7.7

1986

7.4

1987

6.6

2004

8.0

2002

7.7

2007

8.2

1984

7.0

2013

7.3

1993

7.3

2017

7.5

2012

8.1

2008

7.5

2005

7.6

2003

7.4

2014

8.2

2008

8.4

2021

7.9