2007 2008 2009 2010
Start date 2007-01-01 2008-01-01 2009-01-01 2010-01-01
As of date 2007-12-31 2008-12-31 2009-12-31 2010-12-31
Currency USD USD USD USD
Impairment loss (reversal of impairment loss), gross loan portfolio — — — —
— 567,900 409,597 1,865,752
— 463,076 335,468 1,212,526
Other movements on impairment loss allowance — 0 149,358 0
Exchange differences on impairment loss — 238 0 0
Write offs 309,672 0 76,245 128,552