How to get number of years from PHP date range

I have a number of dates using date ranges in date format. Now I would like to have only years from that date.

Let's say someone gives a date range from: 01-01-2010 to 09-05-2019.

I only want to have years

from that date, so I will include them in my SQL query.

The query only works 2015

if the ranges are given this year, but how can I use it for all years only within the ranges?

Here is the request:

$sql = "SELECT
    MONTH (transaction_date),
    SUM(case when finance_type != 'Deposit' then amount else 0 end) AS total_amount,
    SUM(case when finance_type = 'Deposit' then amount else 0 end) AS deposit,
    SUM(case when finance_type != 'Deposit' AND amount < 0 then amount else 0 end) AS expenses,
    SUM(case when finance_type != 'Deposit' AND amount > 0 then amount else 0 end) AS earning,          
    SUM(case when finance_type != 'Deposit' AND amount!='' then num_contract else 0 end) AS total_contracts,
    transaction_date  
      FROM 
        `tbl_finanace`
            WHERE
                transaction_date LIKE '%2015%'
            AND user_id = '15'
                GROUP BY
            MONTH (transaction_date)
                ORDER BY
            MONTH (transaction_date)";