The document shows percentages ranging from 100% to 0% on the y-axis across the years 2003 to 2011 on the x-axis, indicating some variable that has decreased over time from 2003 to 2011.

1. 100%
90%
80%
70%
60%
50%
40%
30%
20%
10%
0%
Año 2003 2004 2005 2006 2007 2008 2009 2010 2011