Keyword Analysis & Research: what year was polio vaccine made

Keyword Analysis

Keyword	CPC	PCC	Volume	Score	Length of keyword
what year was polio vaccine made	0.75	0.3	1249	17	32
what	1.33	0.2	6116	59	4
year	1.82	0.1	3480	67	4
was	1.29	0.6	8841	80	3
polio	0.76	0.1	8580	56	5
vaccine	0.41	0.8	5098	30	7
made	1.04	0.4	7847	69	4

Keyword	CPC	PCC	Volume	Score
what year was polio vaccine made	0.88	0.9	2368	90