We use this information to make the website work as well as possible and improve our services.
You’ve accepted all cookies. You can change your cookie settings at any time.
18 November 2021
Please note there was an error in the labelling of Table 9 in the 2019 to 2020 data which has now been amended and corresponding tables and text updated. We apologise for any inconvenience caused.
Previous versions of this data are available.