Sort the values according category.

Certified Associate Developer

I have a variable that contain list of items, items are ;-

year , category , value

2024, cap internal , 20

2024, cap external, 60

2024, cap material, 50

2025, exp internal , 20

2025, exp external , 30

2025, exp material , 40

I want to sort this like :- 

year , category , value

2024, cap external, 60

2024, cap material, 50

2024, cap internal , 20

2025, exp external , 30

2025, exp material , 40

2025, exp internal , 20

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