Calendar 7.0 does not show year overview data

In past iterations of Calendar, when I switched to the "year" view, I would get a nice density graph across the various dates, so I could tell at a glance how heavily scheduled a certain week or month is...

Now when I click on "year view", I see only a blank calendar, and have to click on each date to see if I have something scheduled there. Is there a way to return the previous overview functionality?

Thank you -

Randy

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OS X 10.9.5

2.7 GHz Intel Core i5

Calendar Version 7.0 (1841.1)