Reserves of foreign exchange and gold : This entry gives the dollar value for the stock of all financial assets that are available to the central monetary authority for use in meeting a country's balance of payments needs as of the end-date of the period specified. Industry includes mining, manufacturing, energy production, and construction. Also see the Terminology note. Telephones - mobile cellular : This entry gives the total number of mobile cellular telephone subscribers, as well as the number of subscriptions per inhabitants. We will work to protect all information you provide, including your identity, and our interactions with you will be respectful and professional. Unemployment, youth ages : This entry gives the percent of the total labor force ages unemployed during a specified year. Environment - international agreements : This entry separates country participation in international environmental agreements into two levels - party to and signed, but not ratified.