The non-current and current portion of the lease liabilities as at December 31, 2020 and 2019 is as follows:

	31/12/20		31/12/19
Non-current portion of the lease liabilities		43,137		46,053
Current portion of the lease liabilities		10,456		11,314
Total		53,593		57,367

Changes in the carrying amount of the lease liabilities for the year ended December 31, 2020 and 2019 are reported in the following tables.

	31/12/20			31/12/19
Balance at beginning of year		57,367			56,758
Additions for new leases		10,083			11,544
Interest expenses		2,589			2,291
Lease payments		(12,496	)		(14,251	)
Disposal of leases		(260	)		—
Adjustments due to remeasurements		850			—
Adjustments due to modifications		(327	)		—
Covid-19 rent concessions		(1,799	)		—
Effect of translation adjustments		(2,414	)		1,025
Balance at end of year		53,593			57,367

As at December 31, 2020 and 2019, the incremental borrowing rate is within the range of 3% and 12%.

The maturity analysis of the contractual undiscounted cash flows of the lease liabilities as at December 31, 2020 and 2019 are reported in the tables below.

	31/12/20		31/12/19
Less than one year		13,039		13,928
One to five years		35,461		36,540
More than five years		14,154		17,760
Total undiscounted lease liabilities		62,654		68,228

Some property leases contain extension options exercisable by the Group up to one year before the end of the non-cancellable contract period. Where practicable, the Group seeks to include extension options in new leases to provide operational flexibility. The extension options held are exercisable only by the Group and not by the lessors. The Group assesses at lease commencement date whether it is reasonably certain to exercise the extension options. The Group reassesses whether it is reasonably certain to exercise the options if there is a significant event or significant changes in circumstances within its control. The Group has estimated that the potential future lease payments, should it exercise the extension option, would result in an increase in lease liability of 19,289 (20,709 as at December 31, 2019).

The Group negotiated rent concessions with its landlords for the majority of its retail store leases as a result of the severe impact of the COVID-19 pandemic during the year. The Group applied the practical expedient for COVID-19-related rent concessions consistently to eligible rent concessions relating to its retail store leases. The amount recognised in profit or loss for the reporting period to reflect changes in lease payments arising from rent concessions to which the Group has applied the practical expedient for COVID-19-related rent concessions is 1,799 (2019: nil).