The global market for RFID middleware is expected to reach an estimated $16.4 mln in 2004, and an estimated $43 mln in 2005. This represents an annual growth rate of 162%. RFID middleware will account for roughly 3% of RFID systems revenues by 2007, or $135 mln. The global market for RFID systems reached $1.1 bln in 2003. VDC estimates the market will reach $1.5 bln by the end of 2004. This represents growth of 35% year-over-year. VDC expects the market for RFID systems to experience a compound annual growth rate (CAGR) of 43% through 2007.