I don’t have distributions by years.
If you read German memoirs the T34 really caused them fits in the early part of the war. I don’t recall any mentions of the Sherman tanks on the Russian front. The British tankers referred to the Sherman tanks as Tommy cookers. The thing the Russians always seemed to appreciate was the Studebaker trucks. They evidently were really workhorses and indestructible.
Me neither. But,
Under Lend-Lease, 4,102 M4A2 medium tanks were sent to the Soviet Union. Of these, 2,007 were equipped with the original 75 mm main gun, with 2,095 mounting the more-capable 76 mm gun. The total number of Sherman tanks sent to the USSR under Lend-Lease represented 18.6% of all Lend-Lease Shermans.[40] https://en.wikipedia.org/wiki/M4_Sherman And
In 1939, the most numerous Soviet tank models were the T-26 infantry tank and the BT series of fast tanks...Both were Soviet developments of foreign designs from the early 1930s; the T-26 was based on the British Vickers 6-Ton, and the BT tanks were based on a design from American engineer J. Walter Christie.[15].. During the Battle of Lake Khasan in July 1938 and the Battles of Khalkhin Gol in 1939, an undeclared border war with Japan on the frontier with occupied Manchuria, the Soviets deployed numerous tanks against the Imperial Japanese Army (IJA)...The Soviet tanks were also easily destroyed by the Japanese Type 95 tank's 37 mm gunfire, despite the low velocity of that gun,[22] or "at any other slightest provocation".[23]
The first production T-34s were completed in September 1940, completely replacing the production of the T-26, the BT series and the multi-turreted T-28 medium tank at the KhPZ plant.[27]...The Christie suspension of the T34 was inherited from the design of American J. Walter Christie's M1928 tank, versions of which were sold turret-less to the Red Army and documented as "farm tractors", after being rejected by the U.S. Army. ...The T-34 posed new challenges for the Soviet industry. It had heavier armour than any medium tank produced to date, and there were problems with defective armour plates.[29] Only company commanders' tanks could be fitted with radios (originally the 71-TK-3 radio set), due to their expense and short supply – the rest of the tank crews in each company signalled with flags.[30]....Production of this first T-34 series – the Model 1940 – totalled only about 400,[31] before production was switched to the Model 1941, with the F-34 gun, 9-RS radio set (also installed on the SU-100), and even thicker armour.[32] ..After Germany's surprise invasion of the Soviet Union on 22 June 1941 (Operation Barbarossa), the Wehrmacht's rapid advances forced the evacuation and relocation of Soviet tank factories eastwards to the Ural Mountains, an undertaking of immense scale and haste that presented enormous logistic difficulties and was extremely punishing to the workers involved....Stalingrad kept up production until September 1942....In 1943, T-34 production had reached an average of 1,300 per month; this was the equivalent of three full-strength Panzer divisions.[40]
A report by the 2nd Guards Tank Army in February 1945 revealed that the average engine service life of a T-34 was lower than the official warranty at 185–190 hours. For comparison, the US M4 Sherman had an average engine service life of 195–205 hours.[87] During the Korean war the Americans captured a North Korean T-34 85, evaluating its performance. According to the tank’s instruments, it had travelled for 741 km, but the level of wear on the engine was minimal. The quality of materials used were "ample for the job" with some being "better than those used in American tanks". Protective coatings used to prevent wear of components were deemed "most effective". However the tank also had various defects. The gearbox was seen as problematic and unreliable and the US opinion of the transmission was exceptionally low, stating that it had "by American standards already failed". Analysis from the CIA suggested it was due to "inadequate design" due to the fact that the quality of materials used was not poor.[88]https://en.wikipedia.org/wiki/T-34