[["( in thousands )", "net undeveloped acres expiring 2014", "net undeveloped acres expiring 2015", "net undeveloped acres expiring 2016"], ["u.s .", "145", "60", "46"], ["e.g. ( a )", "36", "2014", "2014"], ["other africa", "189", "2605", "189"], ["total africa", "225", "2605", "189"], ["total europe", "216", "372", "1"], ["other international", "2014", "20", "2014"], ["worldwide", "586", "3057", "236"]]