Not sure which numbers you are talking about, but the number of actual sales in all categories east of Sandestin on your spreadsheets are down May 2004 versus May 2006 or May 2005 versus May 2006. Some of the sales figures are down by over 75% when comparing 04 to 06. If you are referring to the average price, then you are correct. However, the sample sizes are way too small to glean any real comparisons of average price year over year.
The only way to do a reasonabel price comparison is to compare prices of comp sales. Look at sales in any of the major developments along 30A and compare lot prices (for lots next door to each other) from 2004, 2005 and 2006. You will see that in every development that lot prices are way down from market highs. Your spreadsheets show that actual unit sales are down dramatically, and if you look at lot sales comps, sales prices are also way down. Argue if you want to, but from what I read you are a realtor with access to all MLS data, so before you argue, look at cypress dunes, the preserve, watercolor, watersound, etc and look at recent lot sales compared to nearby lots that sold 18 or 24 months ago. In virtually all cases, you will find prices are way down. House comps are more difficult, but most realtors I have talked to would agree that prices on homes are down too, just not as dramatically as lot prices.
The average sales price on your spreadsheets is interesting information, but not useful for making comparison year over year. If the sales data had hundreds or thousands of unit sales, then the average price comparson might be valid. With fewer than 20 sales in most categories, the average price comp is not statistically valid.