16. Major maintenance provision

The Company has the obligation to perform major maintenance activities in its airports. The provision is recognized as accrued at an amount that represents the best estimate of the present value of future disbursements required to settle the obligation, at the date of the accompanying consolidated financial statements at a discount rate of 8.00%, 9.67% and 8.85% as of December 31, 2019, 2018 and 2017, respectively.

As of December 31, 2019, 2018 and 2017, the composition and changes of the Company’s major maintenance provision was as follows:

December 31,

December 31, 2019

2018

Additions

Disbursements

Short-term

Long-term

Major maintenance of concessioned assets

Ps.

943,548

Ps.

315,481

(1)

Ps.

(305,133)

Ps.

151,554

Ps.

802,342

December 31,

December 31, 2018

2017

Additions

Disbursements

Short-term

Long-term

Major maintenance of concessioned assets

Ps.

857,624

Ps.

225,244

(1)

Ps.

(139,320)

Ps.

224,982

Ps.

718,566

December 31,

December 31, 2017

2016

Additions

Disbursements

Short-term

Long-term

Major maintenance of concessioned assets

Ps.

669,653

Ps.

285,755

(1)

Ps.

(97,784)

Ps.

232,645

Ps.

624,979

(1)

Includes Ps. (23,157), Ps.23,392 and Ps.5,477, recognized as interest income in the consolidated statement of income and other comprehensive income, for the unwinding effect of the present value calculation as of December 31, 2019, 2018 and 2017, respectively.