2006 2007 2008 2009 2010
Start date 2006-01-01 2007-01-01 2008-01-01 2009-01-01 2010-01-01
As of date 2006-12-31 2007-12-31 2008-12-31 2009-12-31 2010-12-31
Currency USD USD USD USD USD
Impairment loss (reversal of impairment loss), gross loan portfolio — — — — —
— — 231,184 728,494 442,636
— — 0 196,231 -343,578
Other movements on impairment loss allowance — — 0 0 48,618
Exchange differences on impairment loss — — 0 -16,884 —
Write offs 61,731 30,334 63,052 52,215 266,962