Tex. Bus. & Com. Code § 51.160
If the seller makes a statement concerning sales or earnings that may be made through the business opportunity, the disclosure statement must contain a statement disclosing:
(2) the total number of purchasers who, not earlier than the third year before the date of the disclosure statement, purchased business opportunities involving the product, equipment, supplies, or services being offered.
Acts 2007, 80th Leg., R.S., Ch. 885 (H.B. 2278), Sec. 2.01, eff. April 1, 2009.