Not sure how good this is though. Every 3 weeks CIC is able to find 1500 people with 480+ scores (as shown by last two draws). So if CIC does not draw in the next 2 weeks, score may stay at 480+. When CIC draws every 2 weeks they are able to get 1500 people with 450+ score (as shown by last couple of months).
And don't forget last 2 draws were 480 + after a gap of 3 weeks each which means a huge pool would have grown between 450 and 480 itself. At best if a draw happens in 2 weeks, people between 450 and 480 would have waited for 2 months. How much will the pool have swelled in 8 weeks? How much do you think the score will fall? Below 450, not possible at all in the new future. It might take 2-3 draws every 2 weeks to correct the cut-off to around 450 again which means end of 2015 or jan 2016. And then new PNP will open up in 2016 which will drive scores up again.
I dnt see it going below 450 until CIC draws at least 2000 per draw and draw every alternate week regularly.