1993

7.4

2007

6.5

2019

8.1

2020

7.2

1972

8.7

2013

7.8

2019

8.5

2016

7.0

2015

7.5

2012

7.0

2014

7.9

2010

8.4

2022

7.6

2015

7.6

1999

8.2

1978

7.6

2017

7.6

1999

8.4

1994

8.7

2018

7.6