Table: (table 7.A2 from Good Practice Guidance) showing results of the key category trend analysis for 99 per cent of the total emissions and removals in 2005

Key categories are those that comprise 95 per cent of the total.

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(a) Tier 1 Category Trend Assessment - including LULUCF
IPCC Categories	Gas	Base year estimate  Gg	2005 estimate  Gg	trend assessment	Contribution to trend	Cumulative total
Emissions from enteric fermentation in domestic livestock	CH4	21,806.54	23,919.80	0.034	17.6	17.6
Mobile combustion - road vehicles	CO2	7,535.48	12,444.08	0.032	16.5	34.0
Emissions from stationary combustion - solid	CO2	3,227.01	6,727.23	0.028	14.6	48.6
Emissions from stationary combustion - gas	CO2	7,691.14	7,589.75	0.021	10.8	59.4
Emissions from solid waste disposal sites	CH4	2,122.92	1,460.70	0.012	6.4	65.8
Direct emissions from agricultural soils	N2O	475.16	1,762.87	0.012	6.3	72.1
Forest land remaining forest land	CO2	20,624.90	26,767.89	0.011	5.7	77.8
Emissions from agricultural soils - animal production	N2O	6,856.67	7,559.46	0.010	5.3	83.2
Emissions from substitutes for ozone depleting substances	HFCs	0.00	741.56	0.008	4.0	87.1
PFC's from aluminium production	PFC	515.60	80.70	0.006	3.0	90.2
Fugitive emissions from oil and gas operations	CO2	263.48	650.24	0.003	1.7	91.9
Other-emissions from liming	CO2	346.42	714.21	0.0029	1.52	93.4
Conversion to grassland	CO2	706.91	706.91	0.0018	0.94	94.4
Conversion to forest land	CO2	870.01	1,254.72	0.002	0.9	95.3
Fugitive emissions from geothermal operations	CO2	357.34	300.81	0.002	0.8	96.1
Mobile combustion - marine	CO2	247.82	393.72	0.001	0.5	96.5
Emissions from wastewater handling	CH4	222.93	222.87	0.001	0.3	96.8
Mobile combustion - road vehicles	N2O	64.41	134.94	0.001	0.3	97.1
Mobile combustion - rail	CO2	77.50	150.85	0.001	0.3	97.4
Mobile combustion - aviation	CO2	772.83	1,015.99	0.001	0.3	97.7
Emissions from stationary combustion - liquid	CO2	2,546.55	3,128.98	0.000	0.2	97.9
Mobile combustion - road vehicles	CH4	69.00	51.76	0.000	0.2	98.1
Grassland remaining grassland	CH4	57.36	37.82	0.000	0.2	98.3
Fugitive emissions from coal mining and handling	CH4	272.13	305.99	0.0003	0.18	98.5
Non-CO2 emissions from stationary combustion	N2O	75.78	123.91	0.000	0.2	98.7
Emissions from lime production	CO2	81.62	128.60	0.000	0.1	98.8
Conversion to settlement	CO2	97.16	97.16	0.0002	0.13	98.9
Emissions from hydrogen production	CO2	152.29	212.55	0.000	0.12	99.0