Annual purchase commitments under various contracts as of May 31, 2019 were as follows (in millions):

	Aircraft and Aircraft Related		Other⁽¹⁾		Total
2020	$	1,518	$	898	$	2,416
2021		2,455		587		3,042
2022		1,862		383		2,245
2023		1,569		263		1,832
2024		492		140		632
Thereafter		2,456		400		2,856
Total	$	10,352	$	2,671	$	13,023

⁽¹⁾	Primarily equipment and advertising contracts.

The amounts reflected in the table above for purchase commitments represent noncancelable agreements to purchase goods or services. As of May 31, 2019, our obligation to purchase five Boeing 767-300 Freighter (“B767F”) aircraft and six Boeing 777 Freighter (“B777F”) aircraft is conditioned upon there being no event that causes FedEx Express or its employees not to be covered by the Railway Labor Act of 1926, as amended (“RLA”). Open purchase orders that are cancelable are not considered unconditional purchase obligations for financial reporting purposes and are not included in the table above.

We have several aircraft modernization programs underway that are supported by the purchase of B777F and B767F aircraft. These aircraft are significantly more fuel-efficient per unit than the aircraft types previously utilized, and these expenditures are necessary to achieve significant long-term operating savings and to replace older aircraft. Our ability to delay the timing of these aircraft-related expenditures is limited without incurring significant costs to modify existing purchase agreements.

During 2019, FedEx Express entered into agreements to purchase 12 incremental B777F aircraft and 12 incremental B767F aircraft. Six of the B777F and one of the B767F aircraft purchases are conditioned upon there being no event that causes FedEx Express or its employees not to be covered by the RLA. The B777F aircraft are expected to be delivered between 2021 and 2025. The B767F aircraft are expected to be delivered between 2020 and 2022. As part of these agreements, one B777F and one B767F aircraft delivery were accelerated from 2020 to 2019.

As of May 31, 2019, we had $1.1 billion in deposits and progress payments on aircraft purchases and other planned aircraft-related transactions. These deposits are classified in the “Other assets” caption of our consolidated balance sheets. Aircraft and aircraft-related contracts are subject to price escalations. The following table is a summary of the key aircraft we are committed to purchase as of May 31, 2019, with the year of expected delivery:

	Cessna SkyCourier 408		ATR 72-600F		B767F		B777F		Total
2020		—		—		17		5		22
2021		12		5		18		2		37
2022		12		6		12		3		33
2023		12		6		6		4		28
2024		14		6		—		4		24
Thereafter		—		7		—		2		9
Total		50		30		53		20		153

On June 24, 2019, FedEx Express exercised options to purchase an additional six B767F aircraft for delivery in 2022.

FedEx Express now has a total of 20 firm orders for B777F aircraft scheduled for delivery during 2020 through 2025 (one of which was delivered in June 2019) and a total of 59 firm orders for B767F aircraft for delivery during 2020 through 2023 (one of which was delivered in June 2019 and one in July 2019). Six of the B777F orders and five of the B767F orders are conditioned upon there being no event that causes FedEx Express or its employees to be covered by the RLA.

During 2019, FedEx Express also acquired options to purchase an additional 14 B777F aircraft and an additional six B767F aircraft, and the delivery dates of 11 existing B777F option aircraft were rescheduled.

FedEx Express now has options to purchase a total of 25 B777F aircraft for delivery through 2028 and a total of 50 B767F aircraft for delivery through 2026.