our employees proved their commitment to  customers, restoring power in record time.  across our service territory and rate  increases in various states. The higher  margins were partially offset by expected  increases in operating and maintenance  expenses, depreciation, interest expense  and property taxes.  In other reliability efforts, we completed  construction of a natural gas-fired unit at  our Jones Station in Texas. We brought  the unit on line a year ahead of schedule,  significantly under budget and in time for  peak electric use during an unusually hot  summer. Thriving energy and agricultural  industries in that part of the country  contribute to growing electric demand and have prompted us to propose a fourth unit at Jones Station that should be complete by summer 2013, pending all regulatory approvals. Our stock price rose 17 percent in 2011,  hitting a nine-year high in December. Taking into account the reinvestment of our dividends, we delivered a total return of more than 22 percent. We also raised our annual dividend by 3 cents per share, or 3 percent, and maintained strong credit ratings.  Xcel Energy’s  Doug Ryan (left)  worked with  Denver International  Airport’s (DIA)  Woods Allee on  energy efficiency  efforts at the DIA that enabled the airport to save more than 9 gigawatt-hours of electricity annually and earn  rebates of more than $400,000. The DIA also  participated in  Xcel Energy’s  Solar*Rewards ® program, which  offers incentives and  rebates for installing  solar panels. The  airport installed 8 megawatts of  solar panels at three  different locations.  “Xcel Energy’s efforts  and programs have  enabled the airport  to implement a  number of energy  management  initiatives that  are not only  environmentally  beneficial but also  make economic  sense,” Allee said. Our work for customers is built on a solid foundation of operational excellence.  For example, we carefully track electric  system reliability and in 2011 achieved our  company-wide reliability goal despite the  fact that we experienced several major  storms in various parts of our service  territory. Adverse weather resulted in  tornadoes in Minnesota, flooding in  North Dakota, fires in Texas and an early  snowstorm in Colorado. In every situation,  Our energy efficiency efforts are key  components of our environmental  leadership strategy. They help us reduce  emissions while enabling us to avoid  building new power plants, and we are able to earn a significant return on our efforts.  As we ensure reliability and safety, we also  help customers save energy and money  with a wide variety of energy efficiency  programs and rebates. In 2011, we more  than met challenging energy efficiency  targets and in the process gave customers  valuable options for controlling their energy  use in a tough economy. They responded  with a record residential customer  satisfaction score of 93 percent.  Energized for customers Looking ahead, we anticipate delivering  ongoing earnings in the lower half of our  $1.75 to $1.85 guidance range in 2012.  That’s due in part to an early 2012 decision  by the Colorado Public Utilities Commission  (CPUC) to deny our request for interim rates  as part of a larger rate increase request.  The CPUC did, however, allow deferred  accounting for a portion of that interim rate  request, which will partially offset a revenue  gap as we await new rates in Colorado.  In addition, we are paying higher property  taxes, primarily in Colorado and Minnesota.  Despite those challenges, we are focused  on delivering 5 percent to 7 percent annual  earnings growth and feel confident that we  will achieve that goal.  Our public safety efforts are another  measure of operational excellence. To meet  new federal guidelines, we are inspecting  natural gas transmission systems across our  service territory, paying particular attention  to pipelines near public areas. We will  invest about $230 million to upgrade those  systems. We also are making significant  investments in our natural gas distribution  system. Xcel Energy’s natural gas business  is a vital component of our operational mix.  XCEL ENERGY  ! . . 5 ! , 2 % 0 / 2 4 s