Table 1-16 WMO 2003. Calculated global surface mixing ratios (ppt) in the Ab baseline scenario. Dates are for the beginning
of the year indicated.
Year	CFC-11	CFC-12	CFC-113	CFC-114	CFC-115	CCl4	CH3CCl3	HCFC-22	HCFC-141b HCFC-142b Halon-1211	Halon-1202 Halon-1301 Halon-2402 CH3Br CH3CCl3
1990	256.3	474.1	68	15.4	5.1	105.7	124.7	82	0	1.2	2.27	0.03	1.66	0.31	9	550.5
1991	262.6	488	74	15.7	5.6	105.8	128.8	88.1	0	1.7	2.54	0.03	1.85	0.34	9	550.6
1992	267.4	500.2	78.3	15.9	6	105.5	129.1	94.4	0	2.4	2.79	0.03	1.98	0.36	9.1	550.6
1993	271.2	511.5	81.4	16	6.5	105.1	127.8	100.8	0.2	3.3	2.94	0.03	2.07	0.38	9.2	550.6
1994	271.2	518.7	82.9	16.1	7	104.5	118.8	106.8	0.9	4.2	3.1	0.04	2.17	0.4	9.3	550.7
1995	270.6	524.8	83.2	16.2	7.5	103.7	107.8	112.8	2.1	5.2	3.25	0.04	2.33	0.42	9.4	550.7
1996	269.5	530	83.2	16.2	7.9	102.7	97	118.6	3.8	6.3	3.4	0.04	2.46	0.43	9.5	550.7
1997	268.2	534.2	82.7	16.3	8.3	101.6	82.9	125	5.5	7.4	3.55	0.05	2.55	0.43	9.5	550.7
1998	266.6	537.4	82.6	16.3	8.6	100.5	69.3	130.5	7.1	8.5	3.69	0.05	2.64	0.43	9.5	550.7
1999	264.7	539.5	82.3	16.3	8.8	99.2	58.6	136.1	9	9.4	3.83	0.05	2.73	0.42	9.5	550.7
2000	262.6	540.5	81.7	16.4	9	97.9	49.9	141.6	10.8	10.5	3.97	0.05	2.82	0.41	9.3	550.7
2001	260.5	541.2	81.1	16.4	9.1	96.7	42.6	149.3	13	12.2	4.07	0.04	2.9	0.41	9.3	550.7
2002	258.2	541.9	80.4	16.4	9.1	95.5	36.6	156.4	15.4	13.9	4.13	0.04	2.97	0.4	9.1	550.7
2003	255.8	542.7	79.6	16.4	9.1	94.4	31.6	162.9	18.1	15.5	4.16	0.03	3.04	0.39	9	550.7
2004	253.3	541.9	78.8	16.4	9.2	93.3	27.5	168.9	20.9	17.1	4.16	0.03	3.11	0.38	8.9	550.7
2005	250.7	541.1	78	16.4	9.2	92.3	24	174.4	23.8	18.7	4.14	0.02	3.17	0.37	8.8	550.7
2006	248	538.5	77.2	16.4	9.2	90.3	21.2	178.2	26.5	20.1	4.09	0.02	3.23	0.36	8.5	550.7
2007	245.2	536	76.3	16.4	9.2	88.5	18.8	180.6	28.9	21.3	4.03	0.02	3.28	0.35	8.5	550.7
2008	242.4	531.4	75.5	16.3	9.2	85.6	16.7	182	31.1	22.3	3.95	0.01	3.32	0.34	8.4	550.7
2009	239.3	526.9	74.7	16.3	9.2	82.8	15	182.7	33	23.2	3.86	0.01	3.37	0.32	8.4	550.7
2010	236.1	522.5	73.9	16.3	9.2	80.1	13.6	182.8	34.8	24	3.76	0.01	3.4	0.31	8.4	550.7
2011	232.7	517.3	73	16.2	9.2	77.1	12.3	182.5	36.5	24.7	3.66	0.01	3.44	0.3	8.4	550.7
2012	229.2	512.2	72.2	16.2	9.2	74.2	11.2	180.8	37.7	25.2	3.54	0	3.46	0.29	8.4	550.7
2013	225.6	507.1	71.3	16.2	9.2	71.4	10.3	178.2	38.5	25.5	3.43	0	3.49	0.28	8.4	550.7
2014	221.9	502	70.5	16.1	9.2	68.7	9.5	174.8	39.1	25.6	3.31	0	3.51	0.27	8.4	550.7
2015	218.2	497	69.7	16.1	9.2	66.1	8.7	171	39.4	25.7	3.19	0	3.52	0.26	8.4	550.7
2016	214.3	492.1	68.9	16	9.1	63.6	8	167	39.6	25.7	3.07	0	3.54	0.25	8.2	550.7
2017	210.5	487.2	68.1	16	9.1	61.2	7.4	162	39.3	25.5	2.95	0	3.55	0.24	8.2	550.7
2018	206.6	482.3	67.3	15.9	9.1	58.9	6.9	156.2	38.8	25.1	2.83	0	3.55	0.23	8.2	550.7
2019	202.7	477.5	66.5	15.9	9.1	56.7	6.3	150.1	38	24.7	2.71	0	3.56	0.22	8.2	550.7
2020	198.9	472.8	65.7	15.8	9.1	54.6	5.9	143.9	37.1	24.1	2.59	0	3.56	0.21	8.2	550.7
2021	195	468.1	64.9	15.8	9.1	52.5	5.4	137.6	36.1	23.6	2.48	0	3.55	0.2	8.2	550.7
2022	191.2	463.4	64.2	15.7	9.1	50.5	5	131.2	34.9	22.9	2.37	0	3.55	0.19	8.2	550.7
2023	187.4	458.8	63.4	15.7	9.1	48.6	4.7	124.8	33.7	22.3	2.26	0	3.54	0.18	8.2	550.7
2024	183.6	454.2	62.7	15.6	9.1	46.8	4.3	118.6	32.4	21.6	2.16	0	3.53	0.18	8.2	550.7
2025	179.9	449.7	62	15.6	9.1	45	4	112.6	31	20.9	2.05	0	3.52	0.17	8.2	550.7
2030	162	427.8	58.4	15.3	9.1	37.1	2.8	86.8	24.7	17.6	1.59	0	3.44	0.13	8.2	550.7
2035	145.5	406.9	55.1	15.1	9	30.6	1.9	66.9	19.1	14.6	1.22	0	3.33	0.1	8.2	550.7
2040	130.5	387.1	51.9	14.8	9	25.3	1.3	51.6	14.6	12	0.93	0	3.19	0.08	8.2	550.7
2045	116.9	368.2	49	14.6	9	20.9	0.9	39.3	11	9.8	0.7	0	3.04	0.06	8.2	550.7
2050	104.7	350.2	46.2	14.4	9	17.2	0.6	27.6	7.7	7.6	0.52	0	2.88	0.05	8.2	550.7
2055	93.8	333.2	43.5	14.1	8.9	14.2	0.5	18.7	5.2	5.8	0.39	0	2.72	0.04	8.2	550.7
2060	83.9	316.9	41	13.9	8.9	11.7	0.3	12.5	3.4	4.4	0.29	0	2.56	0.03	8.2	550.7
2065	75.1	301.5	38.7	13.7	8.9	9.7	0.2	8.3	2.1	3.4	0.21	0	2.41	0.02	8.2	550.7
2070	67.2	286.8	36.5	13.4	8.9	8	0.2	5.5	1.3	2.6	0.16	0	2.25	0.02	8.2	550.7
2075	60.2	272.8	34.4	13.2	8.8	6.6	0.1	3.6	0.8	1.9	0.12	0	2.11	0.01	8.2	550.7
2080	53.8	259.5	32.4	13	8.8	5.4	0.1	2.4	0.5	1.5	0.09	0	1.97	0.01	8.2	550.7
2085	48.2	246.8	30.6	12.8	8.8	4.5	0.1	1.6	0.3	1.1	0.06	0	1.83	0.01	8.2	550.7
2090	43.1	234.8	28.8	12.6	8.8	3.7	0	1	0.2	0.8	0.05	0	1.71	0.01	8.2	550.7
2095	38.6	223.3	27.2	12.4	8.7	3.1	0	0.7	0.1	0.6	0.03	0	1.59	0.01	8.2	550.7
2100	34.5	212.4	25.6	12.2	8.7	2.5	0	0.5	0.1	0.5	0.03	0	1.48	0	8.2	550.7