2023	2022 (Restated)	2021	2020	2019	2018	2017	2016	2015	2014
Highlights   (Group)*
Number of households developed (000)	29,775	27,921	25,835	23,213	20,920	18,523	16,221	14,147	12,326	10,605
Installed designed daily capacity for C/I customers (000 m³)	200,890	183,326	162,822	141,787	124,709	106,553	87,901	71,182	58,608	50,243
Units of piped gas sold
- Residential households*    ('000 m³)	5,359,365	5,160,954	4,707,980	4,197,249	3,806,381	2,889,578	2,153,314	1,821,136	1,490,416	1,225,825
- C/I customers ('000 m³)	19,537,845	20,490,323	19,915,629	16,882,284	14,879,404	13,228,550	10,934,583	7,966,280	7,001,499	6,676,785
Gas sold to vehicles gas refelling stations ('000 m³)	310,779	415,214	681,304	909,712	1,276,484	1,293,930	1,447,063	1,561,737	1,588,928	1,441,323
Wholesale of gas sales volume ('000 m³)	8,476,566	6,755,548	7,827,611	7,616,141	7,038,805	5,958,069	5,140,957	3,036,778	1,231,521	804,160
Length of existing pipelines(1) (km)	81,604	77,677	72,849	63,096	54,344	46,397	39,146	32,921	29,936	27,065
Revenue & Profit   (RMB million)
Revenue	113,858	110,051	93,113	71,617	70,183	60,698	48,269	34,103	32,063	29,087
Profit before tax	10,005	9,052	11,393	9,558	8,841	5,601	5,190	4,195	4,027	4,747
Income tax expense	-2,273	-2,386	-2,398	-2,227	-1,980	-1,783	-1,517	-1,307	-1,306	-1,127
Profit for the year	7,732	6,666	8,995	7,331	6,861	3,818	3,673	2,888	2,721	3,620
Profit for the year attributable to  non-controlling interests	-916	-799	-1,240	-1,053	-1,191	-1,000	-871	-737	-685	-652
Profit for the year attributable to  owners of the Company	6,816	5,867	7,755	6,278	5,670	2,818	2,802	2,151	2,036	2,968
Dividends	3,029	2,936	2,593	2,273	1,719	1,176	952	775	705	709
Assets & Liabilities   (RMB million)
Non-current assets (excluding interests in associates and joint ventures)	66,931	66,748	63,712	58,715	54,581	45,706	36,155	32,487	30,328	23,715
Interests in associates	4,708	3,607	3,655	3,619	3,308	3,049	1,505	1,350	1,024	882
Interests in joint ventures	5,117	4,870	5,063	4,141	3,841	3,620	3,929	3,704	3,810	3,436
Current assets	26,375	27,133	27,558	23,568	19,515	21,539	17,626	13,840	11,857	15,002
Current liabilities	-34,923	-36,082	-41,579	-33,233	-31,288	-33,017	-25,605	-18,341	-19,408	-13,540
Non-current liabilities	-19,946	-20,714	-16,259	-20,638	-18,937	-15,343	-13,393	-15,186	-11,516	-14,954
Net assets	48,262	45,562	42,150	36,172	31,020	25,554	20,217	17,854	16,095	14,541
Capital & Reserves   (RMB million)
Share Capital	117	117	117	117	116	116	112	112	113	113
Reserves	42,543	38,923	35,660	30,444	25,752	21,269	16,840	14,854	13,355	11,985
Equity attributable to owners of the Company	42,660	39,040	35,777	30,561	25,868	21,385	16,952	14,966	13,468	12,098
Non-controlling interests	5,602	6,522	6,373	5,611	5,152	4,169	3,265	2,888	2,627	2,443
Total equity	48,262	45,562	42,150	36,172	31,020	25,554	20,217	17,854	16,095	14,541
Earnings per share-basic (RMB)	6.05	5.20	6.88	5.59	5.05	2.56	2.59	1.99	1.88	2.74

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

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

^* Residential gas sales volume includes household users and social welfare institutions since 2019.