2016

6.1

2018

6.0

1972

7.1

2009

6.2

2016

5.6

1988

5.5

2000

5.5

2012

6.9

2019

6.3

2017

6.6

2010

5.5

1999

5.9

1989

5.8

2017

9.4

2018

5.6

2011

6.5

2014

7.2

1973

5.0

2021

7.8

2017

5.9