Stacked Bar Chart w/multiple values
 

I have data from several dates. The data indicates how many days a file has
been open. I have two different types of files. "Y" and "N". I need a
stacked bar chart that will give me 4 groups of bars, based on the quantity
of files. 0-21, 22-50, 51-100 and 100+

For each of the groups, I need one bar for each date. So, if I have five
dates, I want five bars for 0-21, five bars for 22-50 and so on. I would
like each of these bars to be stacked w/the number of Y's, then the number of
N's.

Help!