Commodity2005200620072008200920102011
Multiple-walled insulating units of glass$557,701$1,381,567$2,221,613$1,998,249$1,722,729$1,172,114$1,740,071
Total$557,701$1,381,567$2,221,613$1,998,249$1,722,729$1,172,114$1,740,071