SUMIFS producing #VALUE!

I am trying to calculate the number of deaths from tornadoes on various days. The problem is that the death toll is not always known, so I am using ? for that day. For days which are all ? marks, I would prefer to get just a blank cell or simply (missing) if at all possible. If there are mixed values of ? marks and values, I would prefer to just count all of the deaths on that day and come back with a total death toll. I am using the following equation.

=SUMIFS($D$2:$D$38,$I2,$E$2:$E$38)

To further complicate things, some of my dates are in the 1800s. It should not be an issue because I am using the same date though.

I have attached a sample of my spreadsheet.

Thanks in advance for any help you can provide.

Jeff B