To easily make an interactive map based on a spreadsheet, the fastest way you can opt for is Google Docs, requiring no GIS knowledge or software. Besides, it takes very little time to do it, at the most a minute.
The first thing you need to do is take the information to a Google Docs spreadsheet. The structure is simple, two columns are required: the first with the geographic reference and the second with the data to map. This process is done through geocoding, which is the coincidence of a name with its respective location (city, country).
Once you have the table within Google Sheets, you must select the columns to participate. From the Insert menu, select Chart, on the right side of the panel that displays Chart type and select Geo chart.