Table 1.
Year: | 1990 | 1991 | 1992 | 1993 | 1994 | 1995 | 1996 | 1997 | 1998 | 1999 | 2000 | 2001 |
Prevalence %: | 0.05 | 0.10 | 0.15 | 0.22 | 0.32 | 0.40 | 0.53 | 0.61 | 0.67 | 0.72 | 0.76 | 0.79 |
Year: | 2002 | 2003 | 2004 | 2005 | 2006 | 2007 | ||||||
Prevalence %: | 0.81 | 0.81 | 0.83 | 0.83 | 0.83 | 0.83 |