Historically, this has indeed been the case (not unlike the stock market, with a generally rising trend).
| 1987 | 62.03 | |||
| 1988 | 66.67 | |||
| 1989 | 72.43 | |||
| 1990 | 75.58 | |||
| 1991 | 73.43 | |||
| 1992 | 74.30 | |||
| 1993 | 74.46 | |||
| 1994 | 76.46 | |||
| 1995 | 77.74 | |||
| 1996 | 79.61 | |||
| 1997 | 81.82 | |||
| 1998 | 85.71 | |||
| 1999 | 92.08 | |||
| 2000 | 100.00 | |||
| 2001 | 109.27 | |||
| 2002 | 118.00 | |||
| 2003 | 130.48 | |||
| 2004 | 146.26 | |||
| 2005 | 169.19 | |||
| 2006 | 188.66 | |||
| 2007 | 184.83 | |||
| 2008 | 159.17 | |||
| 2009 | 128.81 |
So what happened between 2000 and 2007?
Fundamentally (economics), for value (price) to increase, demand must grow faster than supply.
What are things which contribute to
Increased DEMAND
Increased Population (Population increased ~1.5%)
Increased Wealth (Income) (Income/tax-filing decreased ~3% - dot com recession)
Increased Purchasing Power (Value of USD) (Above taken in real dollars)
Decreased SUPPLY
Number Homes Built (~6% increase over 4 years (2000-2004))
Number Homes Destroyed (Negligible)
As we can see, the wealth per person decreased, and supply of houses increased. Economics would tell us that prices would decrease, but over the four-year period from 2000-2004, the housing prices increased 46% (MUCH faster than historical values). Not only had this never happened in history (even if the days of fastest growth/wealth creation), it was happening during a recession.