Are those numbers the total Jewish refugees rescued at the time of the MSS St. Louis or have you introduced a statistic for a different interval and included Jews from other countries seeking refuge ? Can you break it out by year ?
Obviously, those are total numbers for the period 1933 through 1940, and as you noted, they are disputed numbers.
Indeed, Rosen's critics make much of their claim that whatever numbers the US admitted in those days, far more which lawfully could have been approved, were not, and the quotas left unfilled.
My opinion on this is that we forget today how universally, and how strongly, it was believed then that the US had already accepted more immigrants than we could reasonably absorb, and that a long period of low-immigration quotas was now (1920s & 30s) called for.
Almost nobody in those peaceful days was looking forward to a European war which would kill tens of millions, including millions of Jews.