You can get up to 18 months of analytics through Google's GMB API. If you're code savvy you can just get it yourself, or you can use a 3rd party system that's pulling and displaying the information. Brightlocal has integrated Insights analytics into their dashboard, if you're a brightlocal customer already you can view that 18 months of data easily enough.
New advertising option:
A review of your product or service posted by a Sterling Sky employee. This will also be shared on the Sterling Sky & LSF Twitter accounts, our Facebook group, LinkedIn, and both newsletters.