Based on the search results, the following information was verified: I. BIMSTEC currently has 7 member states: Bangladesh, Bhutan, India, Myanmar, Nepal, Sri Lanka, and Thailand. There is no indication that this will change by 2025. II. BIMSTEC was founded through the Bangkok Declaration in 1997, not the Dhaka Declaration in 1999. III. The founding members of BIMSTEC were Bangladesh, India, Sri Lanka, and Thailand. Myanmar joined later in 1997, and Nepal and Bhutan joined in 2004. IV. Nepal, not India, is the lead country for the tourism sector in BIMSTEC. Therefore, only statement I is correct.