You've been downgraded because Delta pulled out after they bought Northwest, FedEx is flying larger aircraft/fewer routes, and you have zero satellite traffic. Count Ops doesn't discriminate against facilities. The formula is in the contract...
Memphis Annual Traffic Count:
2005- 394,614
2010- 336,017
2015- 219,171
Your traffic is down almost 45% in 10 years and almost 36% in five years!