How many first-time buyers have completed house purchases in each year since 1999.

Published information on home purchases and spend across the First Home Fund, Help to Buy, Open Market Shared Equity (OMSE) and New Supply Shared Equity (NSSE) schemes can be found on the Scottish Government website at the following links:
Help to Buy (Scotland):
https://www.gov.scot/policies/homeowners/help-to-buy/
Open Market Shared Equity and New Supply Shared Equity:
https://www.gov.scot/policies/more-homes/affordable-housing-supply/
First Home Fund:
https://www.gov.scot/publications/first-home-fund-spend-and-units-monitoring-information-report-december-2019-to-march-2021/
Please be aware when reading the published statistics that all schemes were available for first-time buyers. Help to Buy was also for second steppers and priority groups eligible for OMSE and NSSE. First Home fund applicants were eligible if one of a couple were a first time buyer.
An evaluation of the Scottish Government shared equity schemes (Help to Buy, Open Market Shared Equity (OMSE) and New Supply Shared Equity (NSSE)) was published in June 2020. The evaluation can be found on the Scottish Government website at https://www.gov.scot/publications/evaluation-scottish-government-shared-equity-schemes/ .
The evaluation estimated that 64% of Help to Buy purchasers, 71% of NSSE purchasers and 95% of OMSE purchasers were first time buyers. All households supported by the First Home Fund include at least one first time buyer.
We do not hold any historical records pre 2007.