Commodity2005200620072008200920102011
Telephonic/telegraphic switching app.$13,963,772$42,856,137$243,143,298$283,260,927$200,545,257$185,820,478$128,125,439
Parts of the app. & equip. of 85.17$103,281,443$147,093,146$193,971,269$229,561,585$152,227,165$115,564,710$74,503,534
Total$117,245,215$189,949,283$437,114,567$512,822,512$352,772,422$301,385,188$202,628,973