Total nitrogen oxide (NOx) emissions increased by 15% over 2000-10, primarily due to energy-related fossil fuel combustion but also rising emissions from LULUCF (MCTI, 2014b). Emissions of volatile organic compounds (VOCs) increased by 37% over 2000-10, mainly from solvent production and use and industrial processes (Figure 1.9). There are no national, cross-sector emission inventories of other air pollutants, including sulphur oxides (SOJ and ammonia (NH3).