Line graph demonstrates the percentage of E. faecium non- susceptible to vancomycin, by survey year. Survey years include 1995, 1999, 2003, 2005, 2007, 2009 and 2010. The figure includes line graphs for invasive, non invasive, and all isolates From 1995 to 2003 less than 4% of E. faecium isolates were vancomycin non-susceptible. In 2010 36.5% of E. faecium were vancomycin non-susceptible; a similar portion to the 2009 survey (35.2%) but more than double that of he 2007 survey (15.4%, P<0.0001)