20142013201220112010
Retail same-store sales growth-1.9%-3.1%-4.4%-2.3%3.0%
Service center same-store sales growth1.4%0.2%-0.3%1.3%2.4%

Notes:Same-store sales, referred to by the company as "comparable sales," includes sales from stores open at least 12 months, as well as online sales picked up in-store