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[YaroslavPodorvanov]

Articles:

• DOU

[YaroslavPodorvanov]

Growth

SELECT                                    
    DATE_TRUNC('month', created_at),
    COUNT(*)                
FROM users                               
GROUP BY 1                     
ORDER BY 1;

{
    const registrationStats = [
        3,
        24,
        29,
        15,
        23,
        37,
        7,
        33,
        27,
        23,
        37,
        53,
        189,
        65,
        62,
        65,
        49,
        50,
        52,
        74,
        87,
        107,
        91,
        88,
        98,
        133,
        90,
        107,
        76,
        88,
        105,
        67,
        125,
        81,
        132,
        134
    ];

    function calculateCumulativeGrowth(values) {
        let sum = 0

        return values.map((current, index) => {
            if (index === 0) {
                sum += current
                return null
            }

            const growth = (current / sum) * 100
            sum += current

            return Number(growth.toFixed(2))
        });
    }

    console.log(calculateCumulativeGrowth(registrationStats));
}

[
    null,
    800,
    107.41,
    26.79,
    32.39,
    39.36,
    5.34,
    23.91,
    15.79,
    11.62,
    16.74,
    20.54,
    60.77,
    13,
    10.97,
    10.37,
    7.08,
    6.75,
    6.57,
    8.78,
    9.49,
    10.66,
    8.19,
    7.32,
    7.6,
    9.58,
    5.92,
    6.64,
    4.42,
    4.91,
    5.58,
    3.37,
    6.09,
    3.72,
    5.84,
    5.6
]

2025

Average: 5.77
Median 5.72
Geometric Mean 5.56
Largest 9.58
Smallest 3.37

SELECT                                    
    DATE_TRUNC('year', created_at),
    COUNT(*)                
FROM users                               
GROUP BY 1                     
ORDER BY 1;

Year	Users
2023	311
2024	979
2025	1236