This is not an answer to the question per se - however, if this is the standard of your written communication - no wonder you aren't getting a Pay rise.
But, because I'm not an AH - if you want a Pay rise you need to make an Argument as to why you should and appeal to the Companies best interests
Now, to be fair - by researching average pay for your area based on experience, you've done the first step - which is good: 'This is what the Market is paying someone with my Skills and Experience'
However, you need to follow that up with 'And here are some Job Adverts where I meet/exceed the criteria and they are offering within this pay band'
You also need to talk about the VALUE that you bring to the company - What Projects have you worked on? What success have you contributed to? How has the work that you have done generated more revenue, decreased costs, lessened technical debt, increased productivity?
Then you need to talk about the COST to replace you. This ties in with the Research done above - if they are hiring a new hire, on average they will be paying 15% more on the current Salary, there is the cost of hiring depending on the type of role - but in NZ, for IT roles, the Average figure I hear bandied about is a total cost of $10K (Man hours interviewing, Cost of a Recruiter etc.)
Not only that, but the loss of institutional knowledge etc. is a big factor - it takes, on average 3-6 months for a new hire to become profitable for a company.
Then, once you've gathered all that information - you need to present:
Dear Manager,
I have XYZ Skills, I have done ABC projects that have helped generate the company $XXXXX in profit, I've also worked on DEF project that has reduced re-work and lead to an overall increase in efficiency.
The Market rate for someone with my skills and experience is $XXXXXX, and here are 2-3 job adverts in the local area where I meet/exceed the requirements that are being offered in this Salary bracket.
Therefore, I believe a reasonable Salary should be set to $XXXXXX
The cost to replace someone with my skills/experience would be $XXXXXX, which is greater than the above requested Pay Rise. Not to mention the Time and effort spent with recruiters and interviewing, which on average costs a company (insert regional figure for cost of hiring here).
A New hire that would take time to get up-to-speed which would introduce risk for company due to reasons (Appeal to their self-interest here - what they have going on)
Therefore, it is in everyone's best interest that you seriously consider my request for a Pay rise.