From your state tax department:
Article 29 of the Tax Law authorizes counties, cities and some school districts to impose a local sales tax as a complement to the statewide tax. This report presents statistical information on taxable sales and purchases subject to the county or the New York City (NYC) sales tax. Taxable sales include nearly all retail sales of tangible personal property and certain services. Taxable purchases represent the value of tangible personal property or services purchased for use in business operations (which would otherwise be subject to tax) on which no sales tax was previously paid.
To download the entire publication and statistical tables, please go here.