That is money in your pocket as your cut of the proceeds from the stock agency. $1/photo/year used to be the rule of thumb. Some people did better, some people did worse; but on average it was a usable figure for most mortals (assuming they had lots of images on file). Those days are gone for the vast majority of people. Advertising dollars have dried up, magazines have folded, newspapers have folded, micro-stock has emerged, the remaining $ are being leveraged to get print plus electronic licenses for less than they used to pay for print alone, ... So there are fewer people, with less money, chasing more images, and demanding more rights for the images they do license.