There are no minimum earnings to qualify for immigration to Canada
you have at least one continuous year of full-time, paid work experience or the equivalent in part-time continuous employment; your work experience must be Skill Type 0 (managerial jobs), A (professional jobs) or B (technical jobs and skilled trades) on the Canadian National Occupational Classification (NOC); and you must have had this experience within the last 10 years.
I hope I have answered your question!