Passenger revenue per available seat mile (PRASM) Passenger revenues divided by ASMs. Other income primarily includes revenue associated with Individuals loyalty program, baggage charges, ticketing change fees, airport clubs and inflight services. The common value per gallon of gasoline decreased 40.9% to $1.Seventy three in 2015 from $2.92 in 2014. The increase in other regional working bills was principally due to elevated flying underneath capacity buy agreements. This was offset partly by a $121 million, or 9.8%, decrease in fuel costs. Americans 2015 pre-tax income was impacted by substantially lower gasoline costs in 2015 as compared to 2014, offset partially by a decline in revenues pushed by lower yields. Total regional expenses decreased $533 million, or 8.2%, in 2015 as compared to 2014. The 12 months-over-12 months decrease was primarily on account of a $779 million, or 38.8%, lower in gasoline costs, offset partly by a $246 million, or 5.4%, improve in other regional operating bills.
Management uses mainline CASM excluding special items and gas to evaluate our working performance. We imagine that the presentation of mainline CASM excluding gas is useful to investors because each the price and availability of gasoline are subject to many financial and political elements beyond our management, and the exclusion of special gadgets gives investors the flexibility to measure monetary performance in a means that’s extra indicative of our ongoing performance and that is extra comparable to measures reported by different major airways. Any future dividends that could be declared and paid every so often can be subject to market and economic situations, relevant legal necessities and other related factors. Since our capital return program commenced in mid-2014, we’ve got returned more than $9.6 billion to stockholders together with $646 million in quarterly dividends and $9.0 billion in share repurchases, or 228.4 million shares. Metabolic parameters, including fasting glucose and hemoglobin A1c, were not considerably altered, suggesting that Tesamorelin might need a impartial motion on glucose regulation in the course of the study period.
Total passenger revenues declined $1.6 billion, or 4.3%, in 2015 from 2014 pushed by a lower in yield on account of competitive development in sure home markets, including Dallas/Fort Worth, worldwide weakness ensuing from foreign foreign money devaluation relative to the U.S. Complete regional bills elevated $61 million, or 1.0%, in 2016 as compared to 2015. The yr-over-year improve was primarily as a consequence of a $182 million, or 3.8%, enhance in other regional operating expenses driven by increased capability. Other income elevated $183 million, or 3.9%, in 2016 from 2015 driven by a rise in loyalty program income. Total passenger revenues declined $933 million, or 2.6%, in 2016 from 2015 driven by a decrease in yield on account of competitive capacity development, macroeconomic softness outside of the United States and overseas currency weakness. Total passenger revenues declined $933 million, or 2.6%, in 2016 from 2015 pushed by a 2.8% lower in yield as a result of competitive capability development, macroeconomic softness outside of the United States and international currency weakness. Excluding the consequences of pre-tax net particular items, pre-tax revenue was $6.3 billion and $4.2 billion in 2015 and 2014, respectively. We realized pre-tax revenue of $4.Three billion and $4.6 billion in 2016 and 2015, respectively.
Our 2016 pre-tax results on each a GAAP basis and excluding pre-tax internet special objects have been impacted by a decline in revenues on account of lower yields. Very similar to different appetite suppressants, Semaglutide has many unintended effects. This 12 months-over-12 months increase was on account of our new co-branded credit card agreements which became efficient within the third quarter of 2016. See Word 1(i) to AAGs Consolidated Financial Statements partially II, Item 8A for extra info on the loyalty program. See Note 5 to AAGs Consolidated Financial Statements partly II, Item 8A for added information on our debt obligations. See Note 1(i) to Americans Consolidated Financial Statements partially II, Item 8B for additional information on the loyalty program. Now we have omitted from this 2014 Form 10-K sure info required by Part III as a result of we, because the Registrant, will file a definitive proxy statement with the SEC within a hundred and twenty days after the tip of our fiscal yr, pursuant to Regulation 14A, as promulgated by the SEC, for our Annual Meeting of Stockholders anticipated to be held on or about November 6, 2014 (the Proxy Statement), and sure information included within the Proxy Statement is incorporated into this report by reference. Other operating expenses per ASM elevated 5.4% in 2015 as compared to 2014 primarily due to increases in crew journey and certain information know-how projects, in addition to enhancements to our aircraft meals and catering choices.