Please read your application guide at
http://www.cic.gc.ca/english/pdf/kits/guides/EG7.pdfOn page 4:
If you meet the criteria in one of the categories below, your application will be placed into processing if...
1
you have at least one year of continuous full time or equivalent paid work experience in the last ten years in one or more of the occupational categories identified in the Ministerial Instructions.
This means that if you have one or more years experience under NOC 0213 in the last 10 years, you can apply under category 1.
On page 12:
You will earn points for the number of years you have spent in full-time (37.5 hours per week), paid work.
..
Your work experience must be in an occupation of Skill Type 0, or Skill Level A or B
That means that you will be granted points for skilled work experience in the last 10 years. However, you reach maximum points with 4 years experience so you do not gain any more points if you have more than that.