* The duty doubled to four percent in the budget 2012-13
* Duty rose to six percent in January 2013
* Duty rose to eight percent in June 2013
* Duty rose to 10 percent in August 2013
* The duty doubled to four percent in the budget 2012-13
* Duty rose to six percent in January 2013
* Duty rose to eight percent in June 2013
* Duty rose to 10 percent in August 2013
