This chart shows North American Commercial Outlook. While commercial consumers are making efficiency gains, there is negligible difference in the average consumption per commercial user. Commercial units (blue line) cover a wide spectrum such as hospitals, restaurants, warehouses, public service establishments, and office buildings. Although the commercial customer count has stagnated since the 2008–2009 recession, Solomon believes that as economic growth recovers, so will commercial count (growing at 0.5% per year). Consumption (thousands of cubic feet per customer per heating degree day (Mcf/customer/HDD)) (red line) has lagged behind improvements seen in the Residential sector, and Solomon believes this trend will continue during the forecast period. As commercial consumption comes from more heterogeneous consumers, aligning economic incentives to increase building energy efficiency is difficult. For example, a landlord may not be incented to spend capital to decrease energy costs if the tenant is responsible for utility costs.