The ge_dat/nhapexclude directory contains one NHAPEXCLUDE file for each
of six sectors. The sector is generally indicated in the filename, except:
- nhapexclude_2017_ag_16apr2020_v0.txt is for the livestock sector
- nhapexclude_2018gc_ptfire_31mar2021_v0.txt is for both ptfire-rx and ptfire-wild
