Table 1.5.3 Key source analysis - Tier 1 trend assessment

IPCC Source Categories	Gas	1990	2002	Trend	% trend	Total
Mobile combustion - road vehicles	CO₂	7533.73	12292.63	0.0343	24.5	24.5
CH₄ emissions from enteric fermentation in domestic livestock	CH₄	21371.9	23584.68	0.0264	18.9	43.4
Direct N₂O emissions from agricultural soils	N₂O	680.04	2104.46	0.0140	10.0	53.3
CH₄ emissions from solid waste disposal sites	CH₄	2606.10	2066.40	0.0121	8.6	62.0
CO₂ emissions from stationary combustion - gas	CO₂	7842.06	10420.49	0.0097	6.9	68.9
N₂O emissions from animal production	N₂O	6574.17	7255.24	0.0081	5.8	74.7
CO₂emissions from stationary combustion - liquid	CO₂	2546.44	2491.18	0.0066	4.7	79.5
PFCs from aluminium production	PFC	515.60	80.70	0.0060	4.3	83.8
CO₂ emissions from stationary combustion - solid	CO₂	3229.71	3394.88	0.0059	4.2	87.9
Emissions from substitutes for ozone depleting substances	HFCs	0.00	387.59	0.0042	3.0	91.0
Mobile combustion - aviation	CO₂	772.83	1089.25	0.0016	1.2	92.2
CH₄ emissions from manure management	CH₄	573.09	548.00	0.0016	1.2	93.3
Fugitive emissions from geothermal operations	CO₂	357.34	315.24	0.0013	0.9	94.3
Fugitive emissions from coal mining and handling	CH₄	210.02	354.08	0.0011	0.8	95.0