If you want to view download statistics for your packages, Go to Downloads -> Stats in your WordPress admin area. A new window will appear. You can view three types of download statistics here. Details for each type is given below:
If you want to view current months download statistics, you can view it here.
Package vs Date
Here you can view the list of all packages with number of downloads for each package in a table. If you click download count value for a package, you will redirected to details page for that package. If you click any day number, you will be redirected to Package vs User settings.