why did they change the drinking age to 21

Keyword Analysis

Keyword	CPC	PCC	Volume	Score	Length of keyword
why did they change the drinking age to 21	0.05	0.5	4574	95	42
why	0.51	0.9	1582	49	3
did	1.49	0.4	917	67	3
they	0.89	1	8266	80	4
change	1.36	0.7	4142	4	6
the	0.02	0.3	7973	1	3
drinking	1.21	0.2	1003	33	8
age	0.76	0.9	766	61	3
to	1.23	0.9	8875	32	2
21	1.39	0.6	6718	9	2

Keyword	CPC	PCC	Volume	Score
why did they change the drinking age to 21	0.04	0.6	8129	10
why was drinking age raised to 21	1.65	0.2	710	3
when did they change the drinking age	0.93	0.1	6640	12
why is 21 the drinking age	0.53	0.7	6582	74
drinking age changed from 18 to 21	1	1	2016	100
when did the drinking age turn 21	0.75	1	5035	54
when did the drinking age change	0.26	0.3	3234	4
why is the american drinking age 21	1.71	0.7	2116	25
why is drinking age 21 in america	0.21	0.9	1659	90
when was drinking age raised to 21	0.05	0.4	397	87
why was the legal drinking age raised to 21	0.31	0.5	5175	29
why was the drinking age raised to 21 in 1984	0.66	0.9	3295	87
why should the drinking age be raised to 21	1.78	0.6	9409	40
drinking age raised to 21	1.23	0.3	9464	34
who raised the drinking age to 21	1.42	0.7	2654	30
why is the drinking age 21	0.15	0.7	1945	3
reasons why drinking age should be 21	1.89	1	267	25
why is america's drinking age 21	1.37	0.1	7980	93
why is the age to drink 21	0.24	0.7	5208	41
when did they make drinking age 21	0.85	1	6412	49