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Employee benefits (Tables)
12 Months Ended
Dec. 31, 2025
Information  
Summary of employee benefits provisions

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31 December

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31 December

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  ​ ​ ​

2025

  ​ ​ ​

2024

Retirement pay liability provision

 

2,074,592

​

3,144,599

Unused vacation provision

 

816,101

​

824,158

​

​

2,890,693

​

3,968,757

Summary of movement in provision for retirement pay liability

Movements in provision for retirement pay liability are as follows:

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2025

  ​ ​ ​

2024

Balance at 1 January

 

3,144,599

​

3,183,356

Service cost

 

493,572

​

646,459

Remeasurements

 

(1,161,825)

​

231,601

Interest expense

 

711,056

​

696,536

Benefit payments

 

(409,802)

​

(534,804)

Inflation adjustment

​

(703,008)

​

(1,078,549)

Balance at 31 December

 

2,074,592

​

3,144,599

Summary of sensitivity of provision for retirement pay liability

The sensitivity of provision for retirement pay liability to changes in the significant actuarial assumptions is:

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31 December 2025

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Interest Rate

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Inflation Rate

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Sensitivity Level

  ​ ​ ​

1% increase

  ​ ​ ​

1% decrease

  ​ ​ ​

1% increase

  ​ ​ ​

1% decrease

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Change in assumption

 

(13.1)

%

15.6

%

16.1

%

(13.6)

%

Impact on provision for defined benefit plans

 

(271,772)

​

323,636

​

334,009

​

(282,145)

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29.Employee benefits (continued)

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Provision for defined benefit plans (continued)

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31 December 2024

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Interest Rate

​

Inflation Rate

​

Sensitivity Level

  ​ ​ ​

1% increase

  ​ ​ ​

1% decrease

  ​ ​ ​

1% increase

  ​ ​ ​

1% decrease

​

Change in assumption

 

(14.2)

%

17.2

%

6.6

%

(22.7)

%

Impact on provision for defined benefit plans

 

(446,533)

​

540,557

​

207,544

​

(713,824)

​