Blood as Economic Indicator?

I’m tied up with a real project (real deadline) early this week, and posting will be light. But no deadline can stand in the way of Shanghai Daily’s round-up of Shanghai-based Spring Festival statistics, and this head-scratcher of an editor’s note:

EDITOR’S note:

The economic downturn seemed to have little effect on Shanghai’s Lunar New Year celebrations, with local scenic spots, transport firms and cinemas reporting bumper figures. However there were some signs of strain, with blood donations down during the week-long Spring Festival holiday … [M]any residents give blood during the holiday in order to help others.

So: when the going gets tough, the Shanghainese go to the movies, but they don’t donate blood? And this, from the city’s state-owned English language paper?