How do I calculate leap year from a list of years

CREATE FUNCTION fnLastLeapYear
(
     @Year INT = 0
)
RETURNS INT
AS
BEGIN
    DECLARE @LastLeapYear int = 0
    ;WITH LastLeapYear([year], Found) as
    (
        SELECT
               @Year [year]
             , CASE
                   WHEN datepart (DAY, dateadd(DAY, -1, dateadd(MONTH, 1, convert(DATETIME, convert(VARCHAR, @Year) + '-02-01')))) = 29 THEN
                       'y'
                   ELSE
                       'n'
               END AS Found

        UNION ALL

        SELECT
               [year] - 1 AS [year]
             , CASE
                   WHEN datepart (DAY, dateadd(DAY, -1, dateadd(MONTH, 1, convert(DATETIME, convert(VARCHAR, [year] - 1) + '-02-01')))) = 29 THEN
                       'y'
                   ELSE
                       'n'
               END AS Found
        FROM
            LastLeapYear
        WHERE
            Found = 'n'
       )
    SELECT @LastLeapYear = [year] FROM LastLeapYear WHERE Found = 'y'
    Return @LastLeapYear;
END

SELECT  dbo.fnLastLeapYear(1995)