Get and extract files with

    ruby get_files.rb
    ruby extract_files.rb

Process extracted XML files with

    ruby process_files.rb YYYY >results-YYYY.csv

Concatenate results files with

    ruby concatenate_results.rb

Identify and save duplicates with

    ruby eliminate_duplicates.rb

Prepare results for analysis with fixed customer and supplier names and eliminated duplicates

    ruby prepare_for_analysis.rb >results_for_analysis.csv