{"cols":[{"label":"Year","type":"string"},{"label":"Gross margin","type":"number"}],"rows":[{"c":[{"v":"2011","f":null},{"v":7046,"f":"7,046"}]},{"c":[{"v":"2012","f":null},{"v":7301,"f":"7,301"}]},{"c":[{"v":"2013","f":null},{"v":7595,"f":"7,595"}]},{"c":[{"v":"2014","f":null},{"v":8157,"f":"8,157"}]},{"c":[{"v":"2015","f":null},{"v":4146,"f":"4,146"}]}]}