How to design navigation/interface for multiple input dashboard

I'm working on an update to an app with a dashboard. The dashboard has three "inputs", if you will:

  • a location (defaults to the root location for the app) from a predefined set;
  • a specific year of reporting
  • a specific month

Currently, the navigation uses dropdowns for the location and month, and a horizontal menu for the year, and that's become unwieldy since reporting has gone on for a bit see screenshot.

I'd like to change the interface so it's uncluttered, easy to navigate, and (possibly) allow date range inputs and selection of facets, but I'm concerned that form-based input would be harder to use than single clicks, particularly since the app has been used for several years that way.

Is there a simple way to present the navigation without necessarily overwhelming the user?

Just as an FYI: Cumulative/Monthly are supposed to be toggles, with Monthly as the default.