Published 14 September 2016
Last updated 29 September 2022
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29 September 2022
2022 publication and tables have been added.
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30 September 2021
Removed pre-2021 publications and added a National Archives link. Added the 2021 publication.
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30 September 2020
2020 publication and tables have been added.
Minor correction made to 2019 publication.
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10 October 2019
Updated with new statistics for 2016 to 2017.
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27 September 2018
Update with new statistics for 2015-16.
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14 September 2017
Update with statistics for 2014-15
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14 September 2016
First published.