2014

7.7

2013

6.5

2019

7.6

2016

6.1

2007

5.4

2017

5.5

2018

5.9

1977

7.6

2013

8.1

2021

7.2

2010

6.4

2017

6.1

2015

6.2

2019

5.9

1976

7.7

2021

7.3

2017

7.2

2013

7.7

2017

7.3

2022

6.6