The official route of the Pan-American Highway through Mexico (where it is known as the Inter-American Highway) starts at Nuevo Laredo, Tamaulipas (opposite Laredo, Texas) and goes south to Mexico City along Mexican Federal Highway 85.
Individual, Family, Dual Premium, and Family Premium Members receive a discount on tickets to the 4-D Theaters at Central Park Zoo ($4 Member/$7 non-Member) and the New York Aquarium ($3 Member/$6 non-Member). Conservation-level Members have free access to these attractions.
Let's take this number, and divide it amongst the 11 Parks world wide, and you get $92,363,636 per park per year. Of course the Parks are open 365 day a year, and that comes to approximately $253,051 per day.