NPD data gleaned by Piper Jaffray analyst Gene Munster Monday showed a more optimistic view of Mac sales in the spring than initial April results. They now showed year-over-year sales up 15 percent in April and May, higher than the nine percent seen earlier. Munster noted that Apple was likely to near the 2011 street target of 22 percent since last June saw it grow just 11 percent, making a higher year-to-year gain relatively easy.
