If there was 500 made per day - they were made between 97-00 so 4 years at 500 a day and one of those years would be a leap year.
So not counting holidays that would be 365 x 4 + 1day (had to be one leap year) = 1461
1461 days x 500 ek9's per day = 730500
That is a rediculous figure and i highly doubt there was that many made.