In a statement released on Sunday, electric vehicle manufacturer Tesla Motors Inc. said that the total number of electric vehicles — including Model S sedans and Model X sport utility vehicles — it delivered in the year 2015 was 50,580. Tesla also said in the statement that it is on track to ramp of the production of its electric vehicles in 2016. The 50,580 electric-vehicle deliveries reported by Tesla for 2015 were at the low end of the “between 50,000 and 55,000” guidance given by the company’s CEO Elon Musk in October. Those projections underscored a downward revision of the initial March estimates that the company will deliver 55,000 electric vehicles in 2015.