Referendum 48 requires that 20 percent of any annual net profits generated from the operation of the Exhibition Center be deposited into the State of Washington Permanent Common School Fund for public school improvements.

Past contributions to the Common School Fund were:

2002 - $116,360
2003 - $137,580
2004 - $126,697
2005 - $150,057
2006 - $276,434
2007 - $220,469
2008 - $237,912
2009 - $98,035
2010 - $103,263
2011 - $110,744
2012 - $173,852
2013 - $301,079
2014 - $416,314
2015-  $457,327
2016 - $487,843
2017-  $509,124