capital return program, in May 2013 the Company issued $17.0 billion of long-term debt with varying maturities through 2043. 

The Company’s fiscal year is the 52 or 53-week period that ends on the last Saturday of September. The Company’s fiscal years 2014, 2013 and 2012 ended on September 27, 2014, September 28, 2013 and September 29, 2012, respectively. Both fiscal years 2014 and 2013 spanned 52 weeks. Fiscal year 2012 spanned 53 weeks, with a 14 th week included in the first quarter of 2012, as is done approximately every six years to realign the Company’s fiscal quarters more closely to calendar quarters. Inclusion of the additional week in 2012 increased the Company’s overall net sales and operating expenses for the year. 

The year-over-year growth in iPhone net sales and unit sales in 2014 resulted primarily from the successful introduction of new iPhones in the latter half of calendar year 2013, the successful launch of iPhone 6 and 6 Plus beginning in September 2014, and expanded distribution. iPhone unit sales grew in all of the Company’s operating segments, while iPhone net sales grew in all segments except Rest of Asia Pacific. Overall average selling prices (“ASPs”) for iPhone were relatively flat in 2014 compared to 2013, with growth in ASPs in the Americas and Retail segments being offset by a decline in ASPs in the Greater China, Japan and Rest of Asia Pacific segments. 

The growth in iPhone net sales and unit sales during 2013 resulted from increased demand for iPhone in all of the Company’s operating segments primarily due to the launch of iPhone 5 beginning in September 2012 and strong ongoing demand for iPhone 4 and 4s. All of the Company’s operating segments experienced increases in net sales and unit sales of iPhone during 2013 compared to 2012. The year-over-year impact of higher iPhone unit sales in 2013 was partially offset by a 3% decline in iPhone ASPs primarily as a result of a shift in product mix towards lower-priced iPhone models, particularly iPhone 4. All of the Company’s geographic operating segments experienced a decline in iPhone ASPs during 2013. 

Net sales and unit sales for iPad declined in 2014 compared to 2013. iPad net sales and unit sales grew in the Greater China and Japan segments but this growth was more than offset by a decline in all other segments. Overall iPad ASPs were relatively flat in 2014 compared to 2013 with a shift in mix to higher-priced iPads being offset by the October 2013 price reduction of iPad mini. ASPs increased in the Japan and Retail segments but were flat to slightly down in other segments. 

The growth in net sales and unit sales of iPad during 2013 resulted from growth in iPad unit sales in all of the Company’s operating segments. This growth was driven by the launch of iPad mini and the fourth generation iPad beginning in the first quarter of 2013. The year-over-year growth rate of total iPad unit sales was significantly higher than the growth rate of total iPad net sales for 2013 due to a reduction in iPad ASPs of 15% in 2013 compared to 2012. This decline resulted primarily from introduction of the lower priced iPad mini and the full year impact of the price