Many charts and graphs of Apple device sales focus on the actual quarterly numbers, but I decided to once again look at that data smoothed for seasonal spikes, since holiday and back-to-school purchase bursts can obscure longer term movement. The results? Key trends continue: iPhone sales are soaring, iPads are slowly declining and Macs — while overall a small number — continue to grow.

These numbers come from averaging the prior four quarters of unit sales (not revenue). While overall revenue lets you know how important various product lines are for a company, unit sales can be a better measure of waxing and waning popularity.

Using data from Bare Figures, the graph below shows what moving averages look like for iPad, iPhone and Mac unit sales. Note that quarters are labeled as calendar-year quarters, not Apple fiscal-year quarters.

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