5 of Notes to Consolidated Financial Statements for additional information regarding our commodity hedging activity. 

The favorable geographic mix was primarily due to many of our emerging markets recovering from the global recession at a quicker pace than our developed markets. Although this shift in geographic mix has a negative impact on net operating revenues, it generally has a favorable impact on our gross profit margin due to the correlated impact it has on our product mix. The product mix in the majority of our emerging and developing markets is more heavily skewed toward our sparkling beverage products, which generally yield a higher gross profit margin compared to our still beverages and finished products. Refer to the heading "Net Operating Revenues" above. 

Selling, general and administrative expenses decreased $428 million, or 2 percent. Foreign currency fluctuations decreased selling, general and administrative expenses by

1 percent. The decrease in stock-based compensation was primarily due to reversals in 2013 of previously recognized expenses related to the Company's long-term incentive compensation programs. As a result of the Company's revised outlook, including the unfavorable impact foreign currency fluctuations are projected to have on certain performance periods, the Company lowered the estimated payouts associated with these periods. Advertising expenses were impacted by shifts in our marketing and media spend strategies, primarily due to spending more marketing dollars toward in-store activations, loyalty points programs and point-of-sale marketing. Many of these strategies impact net operating revenues instead of marketing expenses. The decrease in bottling and distribution expenses includes the impact of the Company's sale of a majority interest in our previously consolidated Philippine bottling operations to Coca-Cola FEMSA in January 2013 and the deconsolidation of our Brazilian bottling operations as a result of their combination with an independent bottling partner in July 2013, partially offset by the impact of our acquisition of bottling operations in Vietnam, Cambodia, Guatemala and the United States in 2012. 

In 2014, our pension expense is expected to decrease by approximately $165 million compared to 2013. The anticipated decrease is primarily due to an increase in the weighted- average discount rate used to calculate the Company's benefit obligation, favorable asset performance during 2013 and the approximately $175 million of contributions expected to be made by the Company to our international plans. Refer to the heading "Liquidity, Capital Resources and Financial Position" below for information related to these contributions. Refer to the heading "Critical Accounting Policies and Estimates — Pension Plan Valuations" above and Note 13 of Notes to Consolidated Financial Statements for additional information related to the discount rates used by the Company. 

As of December 31, 2013, we had $416 million of total unrecognized compensation cost related to nonvested share-based compensation arrangements granted under our plans. This cost is expected to be recognized over a weighted-average period of