The Following Information Is Available for Ohio & West Virginia,Inc,from

The following information is available for Ohio & West Virginia,Inc,from the company's annual Form 10-K:
"Ohio & West Virginia,Inc.(OWV)is a world-class provider of rail-freight transportation and its supporting services.OWV functions as a holding company with subsidiaries that own and operate regional freight railroads.We own or have interests in 47 railroads in five countries (United States,Canada,Mexico,Bolivia and Australia),and operate over 9,300 miles of owned and leased track and more than 3,000 additional miles under track-access arrangements.
Our revenues are generated primarily from the movement of freight over track owned or operated by our railroads.At the heart of OWV's success is the integration of our railroads into strong regional rail systems.Our subsidiary,LinkRail,Inc.,provides freight car switching and rail-related services to industrial companies operating extensive railroad facilities within their own complexes".
Information from the company's income statement contained in the Form 10-K annual report to the Securities and Exchange Commission is as follows:

CLOSING STOCK PRICES AT DECEMBER 31:

Required:
Answer the following questions:
1.What was the percentage increase in sales from 2012 to 2013,and from 2013 to 2014?
2.What was the price/earnings ratio for each year?
3.A frequently used measure of performance in the railroad industry is the operating ratio,i.e.,total operating expenses divided by total operating revenues.What were the operating ratios for 2012,2013,2014?
4.What additional information would be useful in analyzing this income statement?