DEMA released the quarter 4, 2023 Diving Equipment Manufacturing Purchase Index (MPI) data, covering New Orders and Inventory in various diving equipment categories. The MPI data is aggregated by a third-party administrator, revealing trends as percentages where 50% indicates no change, below 50% shows contraction, and above 50% signifies expansion. The data is available in Category and Equipment Type reports, with no individual company information disclosed.