1k is impossible, 2 years ago, all time high price was 250-300 sat. At that time, the coin supply was less than 40 billion. Now the supply is 106 billion.
overall supply is irrelevant. all that matters is the amount of coins for sale on an exchange at the time. i'll bet an awful lot of doge have been deleted or lost.
what do you mean by doge coins being deleted, i can understand what you meant by lost. since it started as fun coin there might be cases that many have forgotten or simply ignored about their stash of doge. but i highly doubt people who are actively monitoring crypto currencies would loose their stash of coins.