As of 2005, the size of the global strip club industry was estimated to be US$75 billion. In 2019, the size of the U.S. strip club industry was estimated to be US$8 billion, generating 19% of the total gross revenue in legal adult entertainment. SEC filings and state liquor control records available at that time indicated that there were at least 3,862 strip clubs in the United States, and since that time, the number of clubs in the U.S. has grown. Profitability of strip clubs, as with other service-oriented businesses, is largely driven by location and customer spending habits. The better appointed a club is, in terms of its quality of facilities, equipment, furniture, and other elements, the more likely customers are to encounter cover charges and fees for premium features such as VIP rooms. The popularity of a given club is an indicator of its quality, as is the word-of-mouth among customers who have visited a cross section of clubs in different regions.