"who said dividend income up 20% in 1 year due to inheritance and aging ?? "
.
You....about 4  hours ago,as part of your "the dog ate my homework" attempt to "smooth over" this (troubling) 20% jump in investment income (2015).
Others have suggested its the TFSA effect (but that does not explain 20% in 1 year)  or people selling equities (capital gains).
Possibly.

The likelihood is most of it represents extra share issuance....
ENB had 800 Million in 2013...847 Million Dec 2015...etc etc
Not to mention all the new preferred shares series...
In 2013 ENB paid $183 Million on preferreds...in 2016 $293 Million....that is a jump of 60% in 3 yrs....quite a factory.
BAM must have 20 different preferred series.
etc etc