Commodity2005200620072008200920102011
Telephonic/telegraphic switching app.$5,808,607$3,192,577$422,711,525$523,911,350$376,593,242$320,191,709$250,720,730
Parts of the app. & equip. of 85.17$103,038,613$69,890,166$96,441,235$414,454,684$264,428,493$182,643,262$96,798,888
Total$108,847,220$73,082,743$519,152,760$938,366,034$641,021,735$502,834,971$347,519,618