Missing the monarchs

Has anyone had monarch butterflies in their gardens this year? I've only seen one - so sad.  I enjoy watching them flit around my butterfly bushes but there are  none to be seen this year.  I know there are studies being done to find out why they are missing.  I have a lot of milkweed in my yard, but if they can't find any between here and Mexico, then what good will it do?  I hope they can recover and come back next year.