xtline graphical question

Dear All, I have the following code

Code:

use "dta\cf_index.dta", clear

keep if year > 1965

encode state, gen(id) 

*dataex id year cf_index (total 2,600 observations)

xtset id year

xtline cf_index, byopts(rows(10)) ytitle("") xtitle("")

and output
Array

My questions:

1. How to remove the "Graphs by stateabb" on the bottom left.
2. How to make the graph more visable, say remove the empty spaces on the top, bottom, left and right parts?

Thanks. If necessay, I can upload the data in Stata format.