when was the last space shuttle flown

Keyword Analysis

Keyword	CPC	PCC	Volume	Score	Length of keyword
when was the last space shuttle flown	1.22	0.6	2056	36	37
when	0.42	0.2	4941	2	4
was	0.14	0.7	4379	62	3
the	1.02	0.4	9973	29	3
last	0.48	0.6	7780	52	4
space	1.86	1	7435	5	5
shuttle	1.55	0.4	682	4	7
flown	0.16	1	4069	78	5

Keyword	CPC	PCC	Volume	Score
when was the last space shuttle flight	0.72	0.6	1824	66
when was the last space shuttle mission	1.91	1	5562	62
when was the last shuttle launch	0.27	0.4	2087	20
the last space shuttle flight	1.08	0.5	2923	74
when was the last shuttle flight	0.38	0.9	4196	25
date of last space shuttle flight	1.56	0.2	9583	82
the last space shuttle	0.33	0.5	658	67
the last space shuttle launch	1.03	0.2	1313	30
the last nasa space shuttle launch	1.08	0.1	8160	37
last space shuttle mission	1.8	0.3	8397	98
space shuttle discovery last mission	1.59	1	7794	3
last space shuttle mission 2011	0.51	0.6	1334	59
what was the last space shuttle mission	0.07	0.7	9227	23
nasa last space shuttle mission	1.37	0.2	6819	26
last space shuttle flight	0.01	0.2	2202	11
what was the last space shuttle flight	0.43	0.5	6270	57
space shuttle endeavour last flight	1.27	0.1	2864	79
when did the last space shuttle flight occur	0.94	0.9	3272	12
last flight of space shuttle discovery	1.71	0.7	52	41