The drug group with the highest consumption (A) in terms of items only accounted for 13.1% to 17.6%, but the matrix of the amount of drugs in the AV group (most needed and used drugs) increased from 39.4% up 53%; essential drugs of group AE tend to decrease gradually from 53.9% to 33.6%; AN group (not essential but consuming a lot) also tended to increase from 9.2% to 21.7%.