Hi, I?m looking for the following retail statistics. 

Book Publishing: 
Number of titles purchased each year in the following catagories and
if that number on the rise or fall over the past few years. I?m not
really looking for the number of books published in each category, but
if you come along the information at the same time, please include.

Relationships
Sex
Food/Cooking
DYI Home Projects (not as important)
Massage/Yoga/Eastern Practices

Home Fragrance 
I have a statistic that says there 2.2 billion dollar year jump in the
home fragrance industry between 1999 and 2001 but I can't locate the
source. I'd either like to get the source of this information or other
information that proves the same point. People like their homes to
smell nice.

If whoever answers this has access to information on increased
readership of the food network, that would be appricated but is not
necessary.

Thank you.