All invoices in the provided data have a due date listed as null, which means that the due dates are unknown. Therefore, it cannot be determined how many invoices are overdue.

The total spend across all invoices is $106,000.00.

In 2012, the total amount spent across all invoices was $81,916.56. This includes various purchases from different vendors, with the highest individual invoice totaling $33,846.11.

The total spend in 2012 can be calculated by summing the grand totals of all invoices from that year. Here are the grand totals from the invoices in 2012: 1. Invoice 37076: $106.14 2. Invoice 37075: $95.46 3. Invoice 35041: $40.61 4. Invoice 32442: $67.85 5. Invoice 32441: $1,179.89 6. Invoice 32440: $7.80 7. Invoice 32439: $36.17 8. Invoice 32438: $423.89 9. Invoice 31672: $3,920.78 10. Invoice 31671: $8.99 11. Invoice 31670: $6,637.09 12. Invoice 31669: $13.39 13. Invoice 38852: $90.75 14. Invoice 38851: $1,264.35 15. Invoice 34581: $140.49 16. Invoice 20228: $33,846.11 17. Invoice 911: $17,614.49 18. Invoice 910: $3,987.80 19. Invoice 39748: $6,895.00 20. Invoice 38990: $1,047.91 Now, summing these amounts: $106.14 + $95.46 + $40.61 + $67.85 + $1,179.89 + $7.80 + $36.17 + $423.89 + $3,920.78 + $8.99 + $6,637.09 + $13.39 + $90.75 + $1,264.35 + $140.49 + $33,846.11 + $17,614.49 + $3,987.80 + $6,895.00 + $1,047.91 = $109,075.57 Therefore, the total spend in 2012 was **$109,075.57**.

I don't know.