Welcome, Again, to the Nostradamus Server!

I am impressed! Your guess that my number begins with 418115115 was exactly right!
What do you guess are the next two digits of my number?
41811511500
41811511501
41811511502
41811511503
41811511504
41811511505
41811511506
41811511507
41811511508
41811511509
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