I have data.frame below
values years
0 24578.0 2007-09
1 37491.0 2008-09
2 42905.0 2009-09
3 65225.0 2010-09
4 108249.0 2011-09
5 156508.0 2012-09
6 170910.0 2013-09
7 182795.0 2014-09
8 233715.0 2015-09
9 215639.0 2016-09
10 215639.0 TTM
The plotted image is attached, the issue is i want years values '2007-09' to 'TTM' as xtick values in plot


