CREATE TABLE #AGE_BUCKETS (AGE INT NULL, CNT INT NOT NULL);

INSERT INTO #AGE_BUCKETS
VALUES
(NULL,6266612),
(-971,1),
(5,1),
(13,19),
(14,299),
(15,740),
(16,1190),
(17,2419),
(18,3842),
(19,5615),
(20,8375),
(21,12414),
(22,17768),
(23,23478),
(24,29857),
(25,36860),
(26,42358),
(27,48682),
(28,44090),
(29,40243),
(30,35525),
(31,31584),
(32,28900),
(33,25339),
(34,22813),
(35,20744),
(36,17656),
(37,16935),
(38,13313),
(39,11700),
(40,10383),
(41,8753),
(42,7838),
(43,6805),
(44,5701),
(45,5216),
(46,4698),
(47,4787),
(48,3710),
(49,3124),
(50,2741),
(51,2274),
(52,2019),
(53,1838),
(54,1454),
(55,1331),
(56,1159),
(57,1149),
(58,953),
(59,756),
(60,690),
(61,651),
(62,596),
(63,487),
(64,419),
(65,398),
(66,289),
(67,330),
(68,231),
(69,219),
(70,204),
(71,167),
(72,140),
(73,94),
(74,86),
(75,86),
(76,63),
(77,56),
(78,34),
(79,27),
(80,30),
(81,20),
(82,22),
(83,13),
(84,20),
(85,9),
(86,12),
(87,41),
(88,12),
(89,20),
(90,9),
(91,10),
(92,18),
(93,15),
(94,20),
(95,42),
(96,111),
(97,923);

CREATE TABLE dbo.X_AGES (
Id BIGINT NOT NULL IDENTITY (1, 1),
AGE INT NULL
);

INSERT INTO dbo.X_AGES WITH (TABLOCK) (AGE)
SELECT ab.AGE
FROM #AGE_BUCKETS ab
CROSS APPLY (SELECT TOP (ab.CNT) NULL FROM dbo.GetNums(ab.CNT)) v(x)
OPTION (FORCE ORDER, NO_PERFORMANCE_SPOOL, QUERYTRACEON 8649); -- I don't want to talk about it


-- the real table
CREATE TABLE dbo.Users (
    Id BIGINT NOT NULL IDENTITY (1, 1),
    Age INT NULL,
    FLUFF VARCHAR(100) NOT NULL,
    PRIMARY KEY (Id)
);

INSERT INTO dbo.Users WITH (TABLOCK) (Age, FLUFF)
SELECT AGE, REPLICATE('CHEATTOWIN', 10)
FROM dbo.X_AGES
ORDER BY Id % 1000 - 0.1 * COALESCE(Age, 0); -- some lazy ordering to make the data less uniform

CREATE INDEX ix_Age_id ON dbo.Users (Age) WITH (DATA_COMPRESSION = PAGE);

DROP TABLE dbo.X_AGES;