More than half of respondents (56.9 percent) to Store Brands' 2015 State of the Industry Research Study indicated that their companies run a multi-tiered private label program, compared to 66.1 percent in the 2014 study. A two-tier program is most common, with 39.7 percent of respondents reporting such a structure, on par with the 39.3 percent reporting such a structure in 2014. Continuing a multi-year trend, fewer respondents reported having a three-tier program than did in 2014 — 17.2 percent in 2015 vs. 21.4 percent in 2014.