Swipe right for previous years.

Years ended Dec. 31 2017 2016 2015
Consolidated financial information (millions of dollars)
Operating income $1,380.9 $1,285.7 $996.2
Net income $593.5 $743.5 $379.2
Net income attributable to ONEOK, Inc. $387.8 $352.0 $245.0
Total assets $16,845.9 $16,138.8 $15,446.1
Common stock data
Shares outstanding at Dec. 31 388,703,543 210,681,661 209,731,028
Data per common share
Earnings per share from continuing operations – diluted $1.29 $1.67 $1.19
Dividends paid $2.72 $2.46 $2.43
Market price range
   High $58.83 $59.03 $51.07
   Low $47.41 $19.62 $18.93
   Year-end $53.45 $57.41 $24.66

† Financial results for 2017 include one-time noncash charges of $141.3 million, or 47 cents per diluted share, related to the enactment of the Tax Cuts and Jobs Act, noncash impairment charges of $20.2 million, or 4 cents per diluted share, and $50 million, or 10 cents per diluted share, in one-time and ONEOK and ONEOK Partners merger transaction-related costs.