Another interesting thing to note in this chart --

The import numbers were nearly zero in the years immediately before Hurricane Andrew...which damages, but certainly does not rule out, the argument that the Glades snakes were hurricane escapees from an importer.
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0.1 Peruvian rainbow boa (Amaru)
2.0 Brazilian rainbow boas (TBA)
0.3 Honduran milksnakes (Chicchan, Chanir, Hari)
1.0 Thayeri kingsnake (TBA)
2.7 corns (Cetto, Tolosa, TBA)
1,000,000.1,000,000 other critters