Timeline of cannabis laws in the United States

Gallup polls. Do you think the use of marijuana should be legal, or not?
Date % Yes, legal
10/2/2023 70
10/3/2022 68
10/1/2021 68
10/1/2020 68
10/1/2019 66
5/15/2019 64
10/1/2018 66
10/5/2017 64
10/5/2016 60
10/7/2015 58
10/12/2014 51
10/3/2013 58
11/26/2012 48
10/6/2011 50
10/7/2010 46
10/1/2009 44
10/13/2005 36
11/10/2003 34
8/3/2001 34
8/29/2000 31
8/28/1995 25
5/17/1985 23
6/27/1980 25
5/18/1979 25
4/1/1977 28
1/26/1973 16
5/3/1972 15
10/2/1969 12

The legal history of cannabis in the United States began with state-level prohibition in the early 20th century, with the first major federal limitations occurring in 1937. Starting with Oregon in 1973, individual states began to liberalize cannabis laws through decriminalization. In 1996, California became the first state to legalize medical cannabis, sparking a trend that spread to a majority of states by 2016. In 2012, Washington and Colorado became the first states to legalize cannabis for recreational use.