New Google metrics

Using the Google UK page, and Instant Search, signed out from Google account, how many letters of the following words need to be typed before the target phrase appears in the automatically-generated list of options?

Target phrase	# Letters required	Position in list
Lady Gaga	3	2
Radiohead	6	1
Supercalifragilisticexpialidocious	6	8
youtube	1	1
van Gogh	3	10
evolution	3	3
creation	5	9
sagrada familia	4	1
spotify	1	8
thermodynamics	6	7
coloratura	6	7