On page 9, line 4, after "state." insert "The corporation's board of directors shall apportion costs among producers whose covered drugs are sold in or into this state proportionally to market share as defined by annual sales revenue in Washington state. Market share by annual sales revenue in Washington state shall be determined using data provided by drug producers and publicly available data for the most recent calendar year available. If annual sales revenue data specific to Washington state is not available, then national sales revenue data will be prorated based on population."