Result not ordered by year

Below is my code, same as video but result is not ordered by the calendar year as seen in the video. What could be the issue

SELECT 
    YEAR(d.from_date) AS calendar_year,
    gender,
    COUNT(e.emp_no) AS num_of_employees
FROM
    t_employees e
        JOIN
    t_dept_emp d ON d.emp_no = e.emp_no
GROUP BY calendar_year , e.gender
HAVING calendar_year >= 1990;