The Commission shall monitor the functioning of the reserve in the context of the report provided for in Article 10(5) of Directive 2003/87/EC. That report should consider relevant effects on competitiveness, in particular in the industrial sector, including in relation to GDP, employment and investment indicators. Within three years of the start of the operation of the reserve and at five-year intervals thereafter, the Commission shall, on the basis of an analysis of the orderly functioning of the European carbon market, review the reserve and submit a legislative proposal, where appropriate, to the European Parliament and to the Council. Each review shall pay particular attention to the percentage figure for the determination of the number of allowances to be placed in the reserve pursuant to Article 1(5) of this Decision, the numerical value of the threshold for the total number of allowances in circulation, including with a view to a potential adjustment of that threshold in line with the linear factor referred to in Article 9 of Directive 2003/87/EC, as well as the number of allowances to be released from the reserve pursuant to Article 1(6) or (7) of this Decision. In its review, the Commission shall also look into the impact of the reserve on growth, jobs, and the Union's industrial competitiveness and on the risk of carbon leakage.