Careless travelers are giving even more funding to the Transportation Security Administration by leaving behind loose change at security checkpoints. Last year, the TSA collected over $765,000. But since 2008, the agency's coffers have collected $4.3 million.

A 2005 federal law grants the TSA to keep any unclaimed monies, or other items for that matter, and transfer it to a special fund for enhancing security operations at airports. Each year since 2008, the amount of money left behind and unclaimed by passengers has increased. The Daily Mail published a chart:

A spokesman told the outlet:

TSA makes every effort to reunite passengers with items left at the checkpoint, however there are instances where loose change or other items are left behind and unclaimed.

Unclaimed money, typically consisting of loose coins passengers remove from their pockets, is documented and turned into the TSA financial office.

During 2015, TSA collected $765,759.15 in unclaimed money. Receipts of unclaimed money are deposited into a Special Fund account so that the resources can be tracked easily and subsequently expended.

What's not included in the tally are the coins that might "accidentally" remain in the pockets of those TSA agents more prone to swiping the loot and filling their own coffers at home.