Gross Margin growth rate-5 year

This is the compound annual growth rate of Gross Margin over the last 5 years. Gross Margin measures the percent of Revenue left after paying all direct production expenses. It is calculated as Revenue minus Cost of Goods Sold divided by Revenue and expressed as a percentage. NOTE: If the value for either the most recent year of the oldest year is zero or negative,the ratio cannot be calculated and a 'NA' (Not Available) code will be used.