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Effective in the first quarter of 2018, we have revised our net sales per hectoliter performance discussions to include a brand volume basis as defined above (with the exception of the STW to STR adjustment) with the net sales revenue component reflecting owned and actively managed brands as well as royalty revenue consistent with how management views the business. We continue to also discuss net sales per hectoliter performance on a reported basis. 

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Our worldwide brand volume decreased in 2018 compared to 2017, due to declines in the U.S. and Canada, partially offset by growth in Europe and International. Worldwide brand volume increased in 2017 compared to 2016, due to the Acquisition as well as strong growth in Europe and International partially as a result of adding the Miller global brands business as well as growth within our existing brand portfolio. 

## Net Sales Drivers 

The following table highlights the drivers of change in net sales for the year ended December 31, 2018, versus December 31, 2017, by segment (in percentages) and excludes Corporate net sales revenue for our water resources and energy operations in the state of Colorado. 

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(1) Includes the impacts of the adoption of the new accounting pronouncement related to revenue recognition as discussed above. See Part II— Item 8 Financial Statements and Supplementary Data, Note 1, "Basis of Presentation and Summary of Significant Accounting Policies"  and Note 2, "New Accounting Pronouncements " for further discussion on the adoption of this revenue recognition guidance. 

(2) Europe "Other" column includes the impacts of the release of an indirect tax provision in 2017 as further described in the Results of Operations. 

