Welcome, Again, to the Nostradamus Server!

I am impressed! Your guess that my number begins with 664800715 was exactly right!
What do you guess are the next two digits of my number?
66480071500
66480071501
66480071502
66480071503
66480071504
66480071505
66480071506
66480071507
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66480071522
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66480071538
66480071539
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