• Block average pre-tax profit margin for 2013-12-31 was 0%, a 0% decline from 2014-12-31.
• Block average pre-tax profit margin for 2014-12-31 was 0%, a 0% decline from 2015-03-31.
• Block average pre-tax profit margin for 2015-03-31 was 0%, a 0% decline from 2015-06-30.

Pre-tax profit margin can be defined as earnings before taxes as a portion of total revenue.