Okay. The first two lines are fine.
For “not being noteworthy progress towards that goal,” after the comma I would add “in spite of certain improvements such as the child tax benefit and the national child benefit supplement”. A number of organizations such as the Caledon Institute have indicated that this improvement, which I think came in 1997, has reduced what would have been an increase in child poverty to the extent of close to 30%, or around 30%. It's the kind of thing we can all build on.