Indexed growth Rate

Hello!

This is my first post, just learning how to use PowerBi as I go!

I am trying to index a growth rate to the first year in my data set(2014) . Data set is revenue by year, region, product line. I would like to be able to filter on region and product line so I dont want to use a static denominator. 

I have Year as a text and I have also converted it to a Date in two seperate columns in order to make YoY growth rate work. 

For year on year growth I used the below:

CurrentRev = sum(FullyMappedData[Revenue (USD)])

PriorYearRev = CALCULATE([CurrentRev], PREVIOUSYEAR(FullyMappedData[year2]))

RevGrowth = DIVIDE([CurrentRev], [PriorYearRev],1 ) - 1

For Indexed Growth I tried to use ([Year] is text here, [year2] is a date)

2014Rev = calculate(sum(FullyMappedData[Revenue (USD)]), FullyMappedData[Year]=2014)

CurrentRev = sum(FullyMappedData[Revenue (USD)])

indexRevGrowth = DIVIDE([CurrentRev], [2014Rev], 1)-1 

I am not sure why 2014 revnue does not fill down for all the years, but this seems to be why my index growth rate is 0 throughout? 

Any help or suggestions would be appreciated! I am sure there is even some better code to use. 

Thank you in advanced!