1993

6.9

2013

8.4

2020

5.5

1985

6.1

2014

7.7

6.6

2022

7.2

2000

5.6

2018

5.9

2014

7.0

1966

6.1

1990

5.8

2017

6.3

2014

6.6

2017

7.3

2019

5.5

2017

6.6

2015

6.4

1994

4.6

2017

7.2