I'm not sure how much to trust a source called "The Investor" since the bias is obvious, but it depends on how much a "grant" is. Bloomberg's report last year (which had quite different numbers, so either things have changed tragically in under a year or this site is misreporting) says the average is $23 US per month which could be easily sustained depending on what taxpayers normally pay. (Plus there are other revenue sources, which Bloomberg noted was buoying everything.)