6.11 Leases

The movements in right-of-use assets were as follows:

x € 1,000

2023

01 January 2023

Included in the consolidation

Depreciation

Additions

Changes in lease period and other changes

31 December 2023

Office buildings

38,691

8,488

-9,750

201

3,257

40,887

Vehicle fleet

26,169

637

-13,876

26,458

563

39,951

Other equipment

7,125

0

-5,537

5,332

1,845

8,765

Total

71,985

9,125

-29,163

31,991

5,665

89,603

2022

01 January 2022

Included in the consolidation

Depreciation

Additions

Changes in lease period and other changes

31 December 2022

Office buildings

38,869

-8,569

2,185

6,206

38,691

Vehicle fleet

25,895

-11,262

11,985

-449

26,169

Other equipment

8,870

-4,575

2,298

532

7,125

Total

73,634

-24,406

16,468

6,289

71,985

The amounts in the column headed 'Changes in lease period and other changes' are connected with lease renewals and rent increases.

The movement in the lease liabilities was as follows:

x € 1,000

2023

01 January 2023

Included in the consolidatioin

Additions

Lease payments

Interest

Changes in lease period and other changes

31 December 2023

Office buildings

38,139

8,488

201

-10,977

1,269

2,501

39,621

Vehicle fleet

26,679

637

26,458

-14,816

1,113

633

40,704

Other equipment

7,372

0

5,332

-6,076

412

2,528

9,568

Total

72,190

9,125

31,991

-31,869

2,794

5,662

89,893

2022

01 January 2022

Additions

Lease payments

Interest

Changes in lease period and other changes

31 December 2022

Office buildings

38,232

2,064

-9,727

1,193

6,377

38,139

Vehicle fleet

26,465

11,886

-11,772

617

-517

26,679

Other equipment

8,987

2,298

-4,952

303

736

7,372

Total

73,684

16,248

-26,451

2,113

6,596

72,190

The maturity of the lease liabilities (based on due dates of the lease instalments) per category of underlying asset can be analysed as follows:

x € 1,000

31 December 2023

Total lease instalments payable

< 1 year

1-5 years

> 5 years

Office buildings

45,358

8,355

30,748

6,255

Vehicle fleet

42,860

15,896

26,866

98

Other equipment

10,099

5,124

4,939

36

Total

98,317

29,375

62,553

6,389

31 December 2022

Total lease instalments payable

< 1 year

1-5 years

> 5 years

Office buildings

43,932

10,276

26,992

6,664

Vehicle fleet

27,544

11,332

16,212

0

Other equipment

7,797

3,411

4,182

204

Total

79,273

25,019

47,386

6,868

The Group is committed to meeting future lease obligations as at the reporting date that are still on order; this amounted to approximately € 11 million in 2023 (2022: € 0 million).

The interest expense on the lease liabilities in 2023 amounted to € 2.8 million (2022: € 2.1 million).

In 2023, the cost of short-term leases for which right-of-use assets have not been recognised amounted to € 109 million (2022: € 94 million). This is largely related to short-term equipment rental on projects.

The total cash outflow relating to leases amounted to € 143 million in 2023 (2022: € 123 million). This includes the aforementioned short-term rental of equipment on projects.

The weighted average incremental borrowing rate that was to determine the amount of the liability was 4% in 2023 (2022: 3%).