Put your initial amount as negative, as though you were buying that much on that day. So in your amounts column, you'll have
($36,537.90)
($200.00)
...
$50,093.04
When I opened the csv file, the negative values were in column E, and the dates in column B, so do this:
=XIRR(E3:E89,B3:B89)
I got a result of 9.773%.