What Happened to Videohive

My portfolio on videohive is http://videohive.net/user/be_studio/portfolio
My sales are dropping while i am uploading content regularly.
In the Month of May i have sold only 10 items. Is there is slowdown or only my portfolio is getting slower in sales.
Any suggestion for me whether it happens to all or it is just happening to me only because there is downfall in my sales while i am incresing the content of my account regularly.
Help me as I am disaapointed.
Thank You all.

Sales change through out the year. Keep up the good work!

Thanks for your support