Food Stamp Usage

The number of people on Food Stamps continues to soar and now is nearing 48 Million people.  At the end of 2002 the number was at 19 Million so in the past 10 years the number has gone up 153%.  If this trend continues for another 10 years by 2022 the number of people on Food Stamps would be around 120 Million or roughly 30% of the projected population.  If the so called economy is improving why is Food Stamp usage soaring?