I refer the Hon. Member to the answer given to the Hon. Member for Westmorland and Lonsdale on the 7th February 2017, UIN 60627 for staffing from 2012 to 2015. The latest published staffing figures for Border Force can be found in the Home Office Annual Report for 2016 - 17.
Refer to link below: FY2016/17 – Page 66
Data for staffing levels in 2017/18 will be available when the Annual Report for 2017 – 18 is published