11-1  Basic Statistics on Urban Infrastructure
Item	2008	2009	2010	2011
Urban Facilities
Population Density                                (person/sq.km)	1413	1415	1389	1389
Per Capita Daily Water Consumption                  (litre)	127.87	129.91	129.52	129.79
Coverage Rate of Water Supply                              (%)	99.39	99.47	99.57	99.74
Coverage Rate of Natural Gas Supply                     (%)	98.50	99.17	99.30	99.48
Per Capita Area of Roads                                    (sq.m)	19.60	20.94	22.23	23.62
10 000 Persons                                                      (unit)
Built-up Area Density of Sewage Pipelines (km/sq.km)		11.46	9.62	10.69
Per Capita Public Green Areas                            (sq.m)	14.20	15.09	15.84	16.00
Coverage Rate of Urban Green Areas                     (%)	39.80	41.18	41.47	41.51
Water Supply
Volume of Water Supply                        (10 000 cu.m)	267172	275592	290866	313500
For Productive Use                               (10 000 cu.m)	113687	117149	127028	139700
For Residential Use                              (10 000 cu.m)	121593	124603	127338	131505
Population Using Water                     (10 000 persons)	2624	2648	2715	2792
Public Transportation
Volume of Passenger Traffic      (10 000 person-times)	339599	335324	371801	380085
Number of Operating Vehicles                            (unit)	30286	25272	27752	31230
Number of Taxis                                                  (unit)	56325	57278	57687	58462
Infrastructure and Waste Water Treatment
Area of Roads                                         (10 000 sq.m)	51755	55756	60325	66123
Length of Roads                                                    (km)	28700	30793	32859	34681
Area of Sidewalks                                   (10 000 sq.m)	9950	10980	12149	13999
Number of Streetlights                                         (unit)	1E+06	1280664	1339298	1445771
Numer of Bridges                                                 (unit)	4071	4251	4316	4359
Volume of Waste Water Discharged         (10 000 ton)	221129	229929	244417	265465
Volume of Waste Water Treated               (10 000 ton)	187912	193738	222691	247348
Length of Levees                                                   (km)	1699	2321	2352	2511
Parks,Gardens and Green Areas
Green Areas                                                            (ha)	135328	146993	157945	165577
Public Park                                                             (ha)	37500	40167	43191	44800
Coverage of Green Area                                         (ha)	156957	168408	181055	188136
Coverage of Urban Green Area                              (ha)	129788	138923	147904	155699
Number of Parks                                                  (unit)	546	575	595	660
Area of Parks                                                          (ha)	18534	20426	21350	22919