2018	2017	2016	2015	2014	2013	2012	2011	2010 (Restated)	2009 (Restated)
Highlights   (Group)*
Number of connceted households (thousand)	18,523	16,221	14,147	12,326	10,605	9,275	7,785	6,815	5,619	4,707
Installed designed daily capacity for commercial/industrial customers (thousand m³)	106,553	87,901	71,182	58,608	50,243	41,864	33,423	25,767	18,175	13,486
Units of piped gas sold
Gas sold to Residential households ('000 m³)	2,889,578	2,153,314	1,821,136	1,490,416	1,225,825	1,030,054	930,290	824,276	640,597	520,170
Gas sold to Commercial/industrial customers ('000 m³)	13,228,550	10,934,583	7,966,280	7,001,499	6,676,785	5,538,164	4,345,314	3,591,898	2,765,488	2,031,242
Gas sold to Vehicles gas refuelling stations ('000 m³)	1,293,930	1,447,063	1,561,737	1,588,928	1,441,323	1,186,697	935,926	696,442	520,438	388,420
Wholesale of gas sales volume ('000 m³)	5,958,069	5,140,957	3,036,778	1,231,521	804,160	370,019	248,536	260,928	222,833	–
Length of existing pipelines(1) (km)	46,397	39,146	32,921	29,936	27,065	23,907	21,312	18,854	16,340	14,126
Number of existing natural gas processing stations	185	173	166	157	149	137	126	115	100	94
Daily capacity of existing natural gas processing stations (thousand m³)	123,640	104,370	84,910	80,198	73,617	58,088	46,176	32,003	23,970	14,638
Revenue & Profit   (RMB million)
Revenue	60,698	48,269	34,103	32,063	29,087	22,966	18,027	15,068	11,215	8,413
Profit before tax	5,601	5,190	4,195	4,027	4,747	2,760	2,852	2,327	1,811	1,383
Income tax expense	-1,783	-1,517	-1,307	-1,306	-1,127	-960	-859	-660	-410	-304
Profit for the year	3,818	3,673	2,888	2,721	3,620	1,800	1,993	1,667	1,401	1,079
Non-controlling interests	-1,000	-871	-737	-685	-652	-548	-511	-414	-388	-276
Profit and total comprehensive income for the year attributable to owners of the Company	2,818	2,802	2,151	2,036	2,968	1,252	1,482	1,253	1,013	803
Dividends	1,172	952	775	705	709	414	362	315	297	200
Assets & Liabilities   (RMB million)
Non-current assets	45,706	36,155	32,487	30,328	23,715	21,006	18,137	15,517	12,712	10,542
Associates	3,049	1,505	1,350	1,024	882	804	798	694	488	324
Joint Ventures	3,620	3,929	3,704	3,810	3,436	2,998	2,271	1,733	1,361	1,016
Current assets	21,539	17,626	13,840	11,857	15,002	11,097	9,687	8,944	5,079	4,754
Current liabilities	-33,017	-25,605	-18,341	-19,408	-13,540	-10,869	-11,614	-9,520	-7,489	-5,364
Non-current liabilities	-15,343	-13,393	-15,186	-11,516	-14,954	-13,144	-8,609	-8,528	-4,611	-4,844
Net assets	25,554	20,217	17,854	16,095	14,541	11,892	10,670	8,840	7,540	6,428
Capital & Reserves   (RMB million)
Share Capital	116	112	112	113	113	113	113	110	110	110
Reserves	21,269	16,840	14,854	13,355	11,985	9,430	8,540	6,936	5,922	5,007
Equity attributable to owners of the Company	21,385	16,952	14,966	13,468	12,098	9,543	8,653	7,046	6,032	5,117
Non-controlling interests	4,169	3,265	2,888	2,627	2,443	2,349	2,017	1,794	1,508	1,310
	25,554	20,217	17,854	16,095	14,541	11,892	10,670	8,840	7,540	6,427
Earnings per share-basic (RMB)	2.56	2.59	1.99	1.88	2.74	1.16	1.39	1.19	0.97	0.78

⁽¹⁾ Length of existing pipelines consists of intermediate pipelines and main pipelines.

^* The Group's operation data included the data of its subsidiaries, joint ventures and associates.