Table 1.

Summary of State Medical Marijuana Laws as of January 1, 2012

State	Year of Legislation/ Referendum/ Court Decision	Patient Registry Required?	Home Cultivation?	Dispensaries Legally Allowed?	Year Legal Dispensaries Operating
Alaska	1998	No	Yes	No
	1999	Yes
	2007
Arizona	2010	Yes	Yes	Yes	2012
California	1996	No	Yes	No
	2003			Yes	2003
Colorado	2000	Yes	Yes	Yes	2005
	2010
	2011
Delaware	2011	Yes	No	Yes	2014
District of Columbia	2010	Yes	No	Yes	2013
Hawaii	2000	Yes	Yes	No
Maine	1999	No	Yes	No
	2002	No		No
	2009	Yes		Yes	2011
	2010
	2011	No
Maryland	2003	No	No	No
	2011
Michigan	2008	No	Yes	No	2009
Montana	2004	No	Yes	Yes	2009
	2011	Yes		No
Nevada	2001	Yes	Yes	No	2009
	2003
	2005
New Jersey	2009	Yes	No	Yes	2012
New Mexico	2007	Yes	Yes	Yes	2009
Oregon	1998	No	Yes	No
	1999	No
	2005	No
	2007	Yes			2009
Rhode Island	2007	Yes	Yes	No
	2009			Yes	2013
Vermont	2004	Yes	Yes	No
	2007			No
	2011			Yes	2013
Washington	1998	No	No	No
	2007		No
	2010		No
	2011		Yes		2011

Note: For each state, the first year listed represents year of initial legalization. Other years listed indicate years with additional legal changes. In some cases, new laws did not alter any of the four policy dimensions listed in the table.