During 2020, the number of registered buyers grew from 3,580,000 to 3,772,000, or 5.4%. Our GMV has grown at a compound annual growth rate of 9.5% since 2006. See Note 17 to the Consolidated Financial Statements for Segment Information. Sellers that elect the purchase transaction model are considered vendors. We have dedicated sales teams to support their needs and supply chain. In addition, we provide full reliable buyer support throughout the transaction process. Our applications are designed with resiliency and fault tolerance in mind. We bore all of the costs for the sorting, merchandising and sale of the property. These contractual restrictions include confidentiality and non-compete provisions. We believe our employees are key to achieving our business goals and growth strategy. We embrace diversity, equity and inclusion. We actively recruit talent with a diversity of experiences, background and ideas. The internet and the e-commerce industry are rapidly changing. Our businesses operate in intensely competitive markets. This heightened focus on e-commerce has increased the competition we face. Competition for employees in our industry is intense. We have occasionally experienced interruptions to our services due to system failures. We may not anticipate these techniques or implement adequate preventive measures. These issues are likely to become more difficult as we expand our operations. If this occurs, even temporarily, it could cause volatility in our stock price. The seasonality of our business places increased strain on our operations. Our international operations may not be profitable on a sustained basis or at all. Global enforcement of these laws has increased substantially in recent years. We pursue the registration of our domain names in the U.S. and internationally. Incurrence of any of these costs could negatively impact our operating results. Factors may arise over time that lead us to change our estimates and judgments. The impact for the year ended September 30, 2016 was $252 thousand. ( Prior periods have not been restated. That impact is included in the business realignment expense line. ( The proceeds paid by buyers also include transaction fees, referred to as buyer premiums. This contract is included within our RSCG segment. Our agreements with our other sellers are generally terminable at will by either party. Both contracts were included in the results of our CAG segment. We grow our buyer base through a combination of marketing and promotional efforts. Only the GovDeals, CAG and Machinio reporting units have goodwill balances. Technology expenses also includes certain costs associated with our e-commerce platform. These activities include online marketing campaigns such as paid search advertising. Acquisition costs and impairment of goodwill and long-lived assets. Interest and other income, net. As a result of the increase in revenues, gross profit increased 10.6%, or $4.8 million. General and administrative expenses. Provision (benefit) for income taxes. Gross profit margin was consistent between the periods. Technology and operations expenses decreased $9.2 million, or 15.1%. The effects of these items caused our cash balance to increase. Changes in and Disagreement with Accountants on Accounting and Financial Disclosure. Cost is generally determined using the specific identification method. The lease payments represent the combination of lease and nonlease components. Subscription fees are recognized rata
