<p>The price readings were collected by the network of INSEE price investigators throughout the month of March 2010.<br /><br />In Metropolitan France, the consumer price index (CPI) data were used and further readings were taken both in Metropolitan France and in the DOM, on the one hand for the typical DOM products not surveyed in Metropolitan France (Charrette rum, anthurium....), and on the other for the products that were too heterogeneous to use CPI readings only.<br /><br />In the DOM, the complementary survey was mainly used, with the readings taken for the monthly index limited to foodstuffs.<br /><br />In Corsica, the complementary survey only was used.<br /><br />The survey was conducted on the Metropolitan territory (including Corsica) and these four overseas departments (DOM): Guadeloupe, Martinique, French Guiana and Reunion Island (at the moment of the survey, Mayotte was not yet a DOM).</p>
