The phrase "inaugural year" refers to the first year of an event, activity, or term of office. It marks the beginning or starting point of something new. Full definition
In that roasting inaugural year of global warming news, 1988, there were 7 such days. (dotearth.blogs.nytimes.com)
During the 2001 - 2002 inaugural year of the neighborhood concept, backyard activities were as varied as the teachers and students in them. (edutopia.org)
April - July 2015, 3 - month residency awarded by Creative Saskatchewan & Mackenzie Art Gallery in inaugural year. (newartprojects.com)