Todd Vasos
Analyst · JPMorgan.
Yes, Matt, that's a great question. And I'd tell you what, we are very pleased with what we are seeing with that consumer, especially that new consumer. When you think about -- we launched that retention program back last summer and really pushed the pedal down, if you will, as we move through the back half of last year. And we never took our foot off the accelerator. I'm happy to say that right now, through second quarter, what we're seeing is double our expectation of that retention rate of that newfound consumer. That is higher by a long shot, quite frankly, than what we saw in '08 during the financial crisis.
So I attribute that quite frankly to the relevancy of this box that we have today. While we made some really nice changes in -- coming out of that '08-'09 time frame, this box now is much more relevant. And I think the important piece is much more relevant across a broad spectrum of the consumer base. And I believe that's why we're keeping that consumer.
And then when you think about how that mix is looking, as John indicated, we are very, very pleased with our nonconsumable or discretionary side. And that is really enhanced compared to 2008 when you really go back to take a look at it. So not only our consumable business, but our nonconsumable business is doing very, very well.
And then as I look at how some of the other components are looking, think about units for a moment. On a 2-year stack basis, our units were up 11.5%. That is very, very strong. And that's, again, a real testament to the ability for us to drive that top line with these new consumers, and our existing consumers still see that value, obviously, that she needs.
So we'll continue to watch that as we go forward. Our goal, as you know, long term, is always to drive that traffic number. And -- but this consumer, especially our core consumer, acts a little different when she has a little extra money. Just as a reminder, when she has extra money in her pocket, we saw it in '08, we see it now, she comes a little less often, spends more once she comes in, and we've seen that on our numbers. As a matter of fact, our 2-year stack traffic number is up about 25%. And again, very, very robust.
So we believe when things start to normalize and some of this extra money that is in the system through government stimulus may start to wane here, we believe that she'll start coming more often and probably spending a little less, getting back to a normal shopping pattern most likely, Matt.