Gmail's front page counter just hit 2075 and stopped running, then updated this:
Don't throw anything away.
Over 2075 megabytes (and counting) of free storage so you'll never need to delete another message.

I just happened to go the page when it was 2074.93xxxx so I wasted a couple of minutes watching..

Apparently, I now have 2077 MB – and the page is still counting up – so it's not stopped growing yet...

With reference to this previous post:

http://blogoscoped.com/forum/7371.html

the timestamps in the code are now:

var CP = [
   [ 1112439600000, 2050],
   [ 1113062400000, 2075],
   [ 1113685200000, 2100]
];

Which map to:

2050 MB = Sat, 2 Apr 2005 11:00:00 UTC
2075 MB = Sat, 9 Apr 2005 16:00:00 UTC
2100 MB = Sat, 16 Apr 2005 21:00:00 UTC

And they'll probably update them again when we reach that target too...