Support currencies with 3 decimal places

Currently CSV Converter cannot convert CSV files with 3 decimal places.

Here is a list of countries that use 3 decimal places http://www.londonfx.co.uk/ccylist.html

Example CSV

TRANSACTION DATE,TRANSACTION DETAILS,AMOUNT,
04/07/2010,Supermarket DUBAI,5.6165,Dr
04/09/2010,Farmacy DUBAI,0.4491,Dr