Keyword Analysis & Research: should i copyright my book before publishing

Keyword Analysis

Keyword	CPC	PCC	Volume	Score	Length of keyword
should i copyright my book before publishing	0.08	0.9	876	73	44
should	1.5	0.3	2707	23	6
i	0.22	0.4	1271	89	1
copyright	0.42	0.6	958	98	9
my	0.89	0.1	746	78	2
book	0.58	0.5	2201	71	4
before	0.94	0.6	4258	8	6
publishing	0.44	0.2	8762	24	10

Keyword	CPC	PCC	Volume	Score
should i copyright my book before publishing	0.78	0.5	950	40