The answer to the above question is: yes! There is no end to the list of possibilities that you can use AdWords scripts for. You can write the scripts or you can use the ones freely available on the internet. You can use scripts for a one-time usage or for repeated usage. You can manually run them when you need them or you can schedule them for running at pre-determined time and frequency. You can manage almost any aspect of your campaign with the help of AdWords scripts.
We call this the trend overview so can be seen across a year. Often month on month changess are small but overtme can be significant e.g. in the example above the CTR has been dropping overtime.
The highlighted elements of the script need to be edited before adding this script. TrendOverviewScript
Under bulk operation there is a tab called scripts and you can name your script and copy the code with the changes and authorise and approve the script and run it.
You can download the script here.
Welcome to using scripts!