Well it depends with what number we will decide to go.

Just remember, we will never have the same fix limit of servicenodes, but always a slowly growing limit.

And it depends what divisor we want to choose.

If we choose 2880 then with the current coinsupply of 4592450 it would allow for 1594 servicenodes to exist.

But as soon as we reach 4593600 it will allow one more (1595) servicenodes, etc...

So, since currently we create about 8000 SPR a day, this means that nearly 3 new servicenode could be added every day.
But this number will get smaller and smaller, much like the total coinsupply will grow slower and slower.

That's how it would develop over the next 10 years: