1982

7.6

1984

6.5

2007

8.2

2013

6.0

6.0

2020

6.7

1969

4.9

2014

5.3

2008

5.7

5.9

2008

7.1

2020

6.5

2022

6.2

1993

6.6

2018

6.3

1967

5.5

1971

7.2

2019

6.7

2016

8.5