Yep. Would it likewise surprise you to learn that the Pinochet government, which is described in similar ways, killed (at the high end of the estimates; the officially accepted ones are 10-20% lower) about 3200 people and "disappeared" about 1000, over the course of 17 years? Also, about 30,000 tortured, though; I have not seen claims of this for Castro's Cuba. All this out of a population of 10-13 million. It sure surprised me when I looked up the numbers.
I'm not condoning the things either government (Pinochet's or Castro's) did, but they are both nowhere close to being "drenched in blood" the way Stalin's or Pol Pot's or Mao's governments were.
I'm also surprised that the population isn't more, Chile felt like a "big" country to me compared to tiny Sweden, but 11 is not much bigger than 8. Though by now it's 18 and 9 millions, so I child deaths seem to be down in Chile since the 80's.
For comparison Puerto Rico have had about 10k murders in the last 15 years alone[1], and that's in less than half the Cuban population.
From 1998 figures[2] and 2002 population numbers I guesstimate that officially about 820 murders occur per year in Cuba, and the 10k in 50 years evens out to 200 per year.
[1] http://www.estadisticas.pr/iepr/LinkClick.aspx?fileticket=nf...
[2] http://www.sld.cu/sitios/dne/buscar.php?id=3297&iduser=4&id_...