Average of an average???
I think you have problems understanding the meaning behind the math.
The data i have quoted (and that's what i was talking about all the time) is taken from the AVG ROI column in the google docs spreadsheet.
That's not the "average of an average" - that is the average overall payout, projected on one year,
or in other words, the payout (in percent) you can expect when you hold the deed one year (assuming you bought them for 1k PED).
...
It's the annualised average weekly % return. ie (cumulative total return)/(# of weeks) * 52 /(CLD price).
And the cumulative total return you've used starts at week 1, not wk 32 (15weeks ago), and so includes data from the events earlier in the year, as I stated.
If you want to look at the past 15weeks on their own, you could say perhaps that the Annualised Average Weekly % Return based on the past 15weeks payouts looks like this:
26.31%
25.12%
24.46%
23.83%
23.38%
22.98%
22.83%
22.86%
22.66%
22.45%
22.36%
22.23%
22.31%
22.41%
22.40%
which, while showing a decline over the summer, is starting to show recovery over the past 4 weeks.
Or, seeing as you've picked a 'random' period (that just happened to start with migration), I could instead look at 20 weeks (ie from the beginning of June), and then the numbers look like this:
25.53%
23.53%
22.05%
20.40%
20.91%
21.81%
22.11%
22.24%
22.21%
22.15%
22.04%
22.03%
22.11%
22.04%
21.94%
21.91%
21.84%
21.92%
22.02%
22.03%
Numbers are fun to play with, and really you can make them say almost anything you want, depending on how you cherry-pick them.
I always prefer looking at the raw data tho, and anyone who does that can clearly see that CLD returns are not falling into an abyss as you are implying, and have some uptrend now that the northern hemisphere summer is over.