The age of the books we read

Recently I set up a poll asking When was the book you are currently reading published?

Readers of my blog are certainly a varied lot if the poll results are anything to go by.

There were 43 respondents, and 18 of them reported their book had been published in the last 5 years. That's 40%.
Another 9 (20%) of the books had been published in the previous 10 years. That means 60% of the books had been published in the last 15 years.
At the other end of the scale, 2 of the books were published over 100 years ago.

In very practical terms, I've checked up on publication dates for the 28 books I've read this year:

2010-3
2009-7
2008-7
2007-1
2005-1
2003-1
2001-1
1999 to 1900 - 6
1840 -1
The list tells its own story doesn't it?