Not yet Case Schiller

From the sales price data I've extracted so far, here's the median appreciation you would have gotten from your house if you bought in various years and sold in 2007.

1992 -- 2.344
1993 -- 2.069
1994 -- 1.977
1995 -- 1.774
1996 -- 1.731
1997 -- 1.673
1998 -- 1.612
1999 -- 1.537
2000 -- 1.550
2001 -- 1.411
2002 -- 1.423
2003 -- 1.278
2004 -- 1.246
2005 -- 1.154
2006 -- 1.079
2007 -- 1.000

I'm looking at house re-sales. The difference in price between two transactions of the same house. Two sales define a "Price Pair". Price pair analysis avoids a lot of annoying variables, like the size or quality of the house, the size of the lot, etc. Price-pairs are what Case-Schiller use. I'm trying to compute a Case-Schiller index for Chapel Hill.