1970

7.3

1991

8.3

2022

7.7

2017

7.2

2016

8.5

2023

8.1

2018

6.8

1972

8.7

2017

7.8

2019

7.8

2019

8.1

2022

7.0

2008

8.5

1988

7.4

2009

7.6

2010

8.4

2019

7.0

2019

8.2

2010

7.4

2017

7.2