My reference is the Osprey Encycopledia of Russian Aircraft, but even here no yearly figures are listed. But it gives a little more details.
The MiG OKB started work on type S (for strelovidnost = swept) in March of 1946 and based it on German work which had determined that a backward-swept midwing configuration with central intake was the best compromise. The first prototype S-01 flew first on Dec. 30, 1947, followed by S-02 on May 27, 1948. The third prototype S-03 had numerous changes applied (many of them diligently listed in the book) and flew first on June 17, 1948. In August 1948 it was selected for mass production as the MiG-15. Initial production started at GAZ-1 with the first aircraft delivered to service units on October 8, 1948. The Politburo decided on March 20, 1949, to increase production, so the plants that were building the La-15, Li-2, Yak-17 and -23 were all switched over to the MiG-15. Until 1956 12,000 units were built in 17 versions, more than half of them (6,500) as two-seater trainers (MiG-15UTI), built from the second half of 1950 on.
The Czech license-built S-102 are given with 853 units, built between 1953 and 1955 and the Polish LIM-1 with 54 units.
The MiG-15bis is listed separately and started production from early 1952 on. In Czechoslovakia 620 were license-built as the S-103 and in Poland as LIM-2 (no numbers given).
The book is clearly more for engineers than for production people. Would you know that the MiG-15 ejection seat needed different cartridges in winter than in summer, or that the MiG-15 Burlak was equipped with a harpoon to catch a cable towed behind the wing of a bomber, so it could fly in tow to be available as fighter cover over the target area? Since the engine was shut down for cruise, the pilot froze abjectly.
The MiG-17 started deliveries from October 1952 on, so it is fair to assume that the bulk of MiG-15 were built between the second half of 1949 and 1952. If you split those three years evenly, the yearly production figure would be 4,000. Now subtract a few hundred for the initial production and some more for the later production years (mostly MiG-15UTI), and I would expect that the highest yearly production was maybe 3,000, with many of the 6,500 MiG-15UTI built between 1953 and 1956.
With the production numbers listed in the book I have a hard time to reach anything close to those 18,000 given in Wikipedia. Many of the MiG-15s flown in East Bloc countries were produced in Russia and exported. The number of exported MiG-15UTI is given as over 1,960 alone.