There isn't a lot of data on private companies, but here's some rules of thumb for you.

First, most VC-funded startups *never* make it to 100m+ revenue, ever. I'm unclear whether your question is "of the number which do make it, how many make it within 5 years?" or whether it's "of total investments, how many both make it to $100m+ and do so in under 5 years."

SaaS companies now are IPO'ing on less than $100m/yr in revenue anyway (e.g. Marketo), certainly having been around longer than 5 years. So, successful companies (from a VC perspective) don't need to grow as quickly as that anyway per se.

It's very hard to get to that revenue level that quickly. The reason is that early on revenues typically grow slowly, then kick up if the company has reached its stride in both marketing/sales and size of market. But that burns 1-2 years of low revenue.

You might be a $1m-$5m/yr in run-rate revenue after, say, 2 years. Now maybe you're growing fast. A very fast revenue growth rate (not "active users") is 3x/yr, maybe 5-7x/yr if you're starting at $1m -- few companies in the $1m-$5m range ever grow faster. But that only gets you to $15m run-rate by year 3, even at the top end of that range.

Even if you're even more generous and call it $20m run-rate at end of year 3, to get to $100m run-rate in year 5 requires something like 2.5x growth in year 4 ($50m) and then 2x in year 5 ($100m).

But wait, "run-rate" isn't "revenue." And when you're growing that fast, actual revenue in the year is much less than your ending run-rate. So actually we're still not at $100m revenue.

So the bottom line is this almost never happens. It still almost never happens on a run-rate basis.

P.S. My company WP Engine is in fact a company on the top end of this sort of growth rate, so I've seen this first-hand in the past 3.5 years. I see what investors say about our growth rate, and whether they say this is typical or atypical. I also see the challenges it creates internally due to human scale, and I know that growing much faster would probably rip us apart from the inside.