18-34  Number of Civil Aviation Routes and Civil Aircrafts|18-34NumberofCivilAviationRoutesandCivilAircrafts|Item|1990|2000|2005|2010|2013|2014||NumberofRegularCivilAviationRoutes(line)|437|1165|1257|1880|2876|3142|InternationalRoutes|44|133|233|302|427|490|DomesticRoutes|385|1032|1024|1578|2449|2652|RegionalRoutes|8|42|43|85|107|114|LengthofRegularCivilAviationRoutes(km)|506762|1502887|1998501|2765147|4106000|4637214|InternationalRoutes|166350|508405|855932|1070167|1503150|1767210|DomesticRoutes|329493|994482|1142569|1694980|2602850|2870004|RegionalRoutes|10919|55759|61056|121437|168363|179320|NumberofRegularCivilAirportsOpened(unit)|94|139|135|175|190|200|NumberofCivilAircraft(unit)|503|982|1386|2405|4004|4168|AeroTransport|204|527|863|1597|2145|2370|Airbus|462|785|1453|1985|2218|Boeing747|11|19|22|40|29|24|Boeing737|21|186|358|650|854|958|Boeing757|9|48|64|48|45|41|Boeing767|6|16|27|18|11|9|MD-90|22|22|11|AirbusA320|60|115|281|503|579|Puddle-jumper|65|78|144|160|152|GeneralAircraft|217|301|383|606|1519|1798|TeachingVerifyingAircraft|82|154|140|202|340|359||a)Before1992,thenumberofcivilairportsandaircraftsreferstothoseownedbyenterprisesdirectlyunderCAAC.Since1992,itreferstothose|ownedbyallenterprisesofcivilaviation.Thesameappliestothetablesfollowing.|b)Before1997,regionalroutesincludetheroutestoandfromHongKong,Macao,andaretakenasparallelitemstotheitemsofdomesticroutes|andinternationalroutes.Since1997,regionalroutestoandfromHongKongaretakenasdomesticroutes,andadjustmentarealsomadeonthe|lengthofaviationroutesandtrafficvolumeaccordingly.Since1999,regionalroutesaretakenasapartofdomesticroutes,andincludetheaviation|routestoandfromHongKong,Macao.Thesameappliestothetablesfollowing.|c)Since2011,civilaviationrouteschangetoregularcivilaviationroutes,civilairportsopenedchangetoregularcivilairportsopened.