The tab "Searches without relevant hits" is showing 0% click rate for all search phrases. Why? What am I missing? Here is a code example that I think should work, the urls have all of Finds query parameters but following the links have no effect on the click rate.

@foreach (var hit in SearchClient.Instance.UnifiedSearchFor("lorem").Track().GetResult()) {
    @hit.Title
}

And there are no errors in the log file.