The chart in this story provides details of the number of image downloads in the last three months of images belonging to 124 of iStockphoto's most productive contributors. Based on the statistics supplied by istockcharts
, I have tracked sales for the last three months of the top 150 producers. Of the 150, twenty-six have asked to remain anonymous, so it was only possible to see specific figures for 124 contributors. The combined gross units licensed in March by this group was 431,708. That dropped to 380,934 in April and was 387,500 in May.