There is a lot of airline data from all major american airlines in that database. From that data you can easily pull DOC and COC's and compare airline to airline, a specific airline though the years or whatever you want to find out.
Let us have a look at two typical carriers:
- American Airlines as the typical legacy carrier
- Southwest Airlines as the typical low cost carrier
In 1995 the price for aircraft fuel was relatively stable at about $0.50 per gallon - unbelievably low for us today.
Im early 2008 the price already was in the region of $2.70, then climbing to almost $4.50 in July before falling rapidly to a low of about $1.00 in December 2008.
Here is the chart for American Airlines in 1995.
We get a whole different picture for the year 2008.
And now here is Southwest Airlines. The trend is the same:
And here are the SWA numbers for 2008:
I think from these charts we can understand the desire from many airlines to get more fuel efficient aircraft as soon as possible.