I found this (hope the link worked) if not sales for the JX from release to date is 2,619 which they say is approximately a 20% increase in SUV sales for them for the year. Oh and 2,079 for the month of April.
http://infinitinews.com/en-US/infiniti/usa/releases/infiniti-sales-increase-5-4-percent-for-april
http://infinitinews.com/en-US/infiniti/usa/releases/infiniti-sales-increase-5-4-percent-for-april