Dave O,
Good point about the linear regression, maybe too much information. But
still, period 1 is higher than period 12, which would report a negative
change. On the other hand, Excel's Linear Regression displays an ascending
trendline which leads me to believe that there is positive growth.
Regression analysis is probably beyond my needs here. But is there some
other way I can calculate growth other than simply saying that Jun-07 is
lower than Jul-06?