Moreover, statistics on landings may be reported on different weight bases. Fuel tax expenditures are an important component of overall support and their inclusion will improve the quality and utility of the GFT database. Fuel-tax concessions can form a large or small share of GFTs in different countries. In Italy and Australia, FTCs comprise more than half of all measured support. The composition of catch (fish, crustaceans and algae) may also influence the analysis.