11-1 Basic Statistics on Urban Infrastructure
Item	2010	2011	2012
Urban Facilities
Population Density                                (person/sq.km)	1389	1389	1349
Per Capita Daily Water Consumption                  (litre)	129.52	129.79	131.58
Coverage Rate of Water Supply                              (%)	99.57	99.74	99.87
Coverage Rate of Natural Gas Supply                     (%)	99.30	99.48	99.48
Per Capita Area of Roads                                    (sq.m)	22.23	23.62	24.70
Built-up Area Density of Sewage Pipelines (km/sq.km)	9.62	10.69	11.04
Per Capita Public Green Areas                            (sq.m)	15.84	16.00	16.37
Coverage Rate of Urban Green Areas                     (%)	41.47	41.51	42.12
Water Supply
Volume of Water Supply                        (10 000 cu.m)	290866	313500	327449
For Productive Use                               (10 000 cu.m)	127028	139700	143546
For Residential Use                              (10 000 cu.m)	127338	131505	137934
Population Using Water                     (10 000 persons)	2715	2792	2887
Public Transportation
Volume of Passenger Traffic      (10 000 person-times)	371801	380085	421566
Number of Operating Vehicles                            (unit)	27752	31230	37309
Number of Taxis                                                  (unit)	57687	58462	68690
Infrastructure and Waste Water Treatment
Area of Roads                                         (10 000 sq.m)	60325	66123	71390
Length of Roads                                                    (km)	32859	34681	36566
Area of Sidewalks                                   (10 000 sq.m)	12149	13999	14971
Number of Streetlights                                         (unit)	1339298	1445771	1629070
Numer of Bridges                                                 (unit)	4316	4359	4660
Volume of Waste Water Discharged         (10 000 tons)	244417	265465	277437.72
Volume of Waste Water Treated              (10 000 tons)	222691	247348	261415.36
Length of Levees                                                   (km)	2352	2511	2583
Parks,Gardens and Green Areas
Green Areas                                                            (ha)	157945	165577	176342
Public Park                                                          (ha)	43191	44800	47318
Coverage of Green Area                                         (ha)	181055	188136	199899
Coverage of Urban Green Area                            (ha)	147904	155699	165409
Number of Parks                                                  (unit)	595	660	686
Area of Parks                                                         (ha)	21350	22919	25023