Hi dig,
To get something close to a sales ratio, you would want to remove R&D, at least. If the auditor did its job, the classification between R&D and S,G&A should be pretty accurate and should at least be consistent.
The good news, as Ramsey is pointing out, is that the tide of small sales is improving.
The bad news, as nfp is pointing out, is that each sale costs more as the sales team expands.
Going forward, the figure to watch is the ratio of sales (on some sensible, comparable measure) to sales-related expenses. Can Wave's sales team improve the income per sales person? If it can, then the market is expanding and I'd expect the company to do well. If it does not, then Wave's in serious trouble.