If those are column names, I personally never put spaces in column names. Use an underscore, at least. Or camelCase. Also, I wouldn't use things like parenthesis or other special characters in column names, either. Nor reserved words ("date", "UUID", etc.)
In order to see which number is called the most, I think some kind of metric is in order. An int column that incrementally increases every time a number is called would be the simplest.
Not knowing the context of your site/app, or other information, it is difficult to answer.