16-36  Number of Civil Aviation Routes and Civil Aircrafts
Item	1990	1995	2000	2003	2004
Number of Civil Aviation Routes   (line)	437	797	1165	1155	1279
International Routes	44	85	133	194	244
Domestic Routes	385	694	1032	961	1035
Regional Routes	8	18	42	43	45
Length of Civil Aviation Routes      (km)	506762	1128961	1502887	1749545	2049394
International Routes	166350	348175	508405	715269	894175
Domestic Routes	329493	750794	994482	1034276	1155219
Regional Routes	10919	29992	55759	62874	62484
Number of Civil Airports              (unit)	94	139	139	126	133
Number of Civil Aircraft               (unit)	499	852	982	1160	1245
Aero transport			527	664	754
Air bus			462	580	675
Boeing 747	11	16	19	19	20
Boeing 737	21	115	186	264	304
Boeing 757	9	44	48	55	62
Boeing 767	6	17	16	22	27
MD-90			22	22	22
MD-82	25	39	27	26	26
Airbus A310	2	3	3	3	3
Airbus A320			60	76	93
BB-146	10	14	7	7	7
Puddle-jumper			65	84	79
General Aircraft			301	343	365
a) Before 1997, the number of civil airports and aircrafts  refers to those owned by enterprises directly under CAAC. Since 1997, it refers to those
owned by all enterprises of civil aviation. The same as in the following table.
b) Before 1997, regional routes includes the routes to and from Hong Kong, Macao, and are taken as the parataxis item as the item of domestic routes
and international routes. Since 1997, regional routes to and from Hong Kong are taken as domestic routes, and adjustment are also made on the
length of aviation routes and traffic volume accordingly. Since 1999, regional routes are taken as a part of domestic routes, and include the aviation
routes to and from Hong Kong, Macao. The same as in the following table.
c) Number of civil aircrafts include the teaching aircrafts and check aircrafts.