Continuous numbering for figure captions in different text boxes

How do I achieve continuous numbering for my Figures when the figure captions are in individual text boxes? 

I set up my Figure paragraph style to be a numbered list starting with the word "Figure". But the numbering starts over in every individual text box (as shown in the image). 

I've explored anchoring the objects to the page, but this requires that I format the figure IN LINE with other text. What I like about the individual text box is, I can position it anywhere on the page, allowing for more design flexibility with my images.