Choose Summary from the Search menu to open the 'Summary Search' window.
Specify the field you want to search in from the drop-down list. All unique values, and the number of occurrences of each value, are then displayed in a list. Select the value you want to search for and click OK.
You can click the heading of one of the two columns to change the sort order. In the example above we have sorted by the Count column in descending order.