Below is the Winging It's new chart between the world's largest builders of aircraft, Boeing and Airbus. These are two classes of numbers. The top of the chart are total value of each's backlog as of January 1, 2017. The far right numbers are YTD backlog values as information is posted by both Boeing and Airbus. This will be a monthly feature during the first two weeks for each month.
Note: This are preliminary numbers until Boeing posts its first month orders and deliveries on February 9, 2017. The number are only a sample of what the Race to world's largest aircraft maker 2017. Boeing is waiting for January updates and Airbus is complete for the month of January. Changes to Boeing values are expected as it will add its delivery totals and any lingering orders not posted.
The above chart is a sample of how total numbers are gathered. The chart is only the single aisle portion from January to date as Boeing has not posted final numbers yet, and Airbus has already posted its January net numbers.
Purchases add to the backlog and deliveries subtract from the backlog. Fig. 1 above recaps all changes from a month to month YTD summary showing which contestant leads with 2017 backlog and also includes its all-time backlog values remaining with world's largest through delivery numbers during 2017.