are 3 years vs is 2 years

Some examples from the web:

• They are 3 years that our family spends most of their holidays.
• There are 3 years I presented you the first installment in the series Epic Pinball by Epic MegaGames.
• Short superior education There are 3 years of studies and have precise professional objectives (theory and practice are often linked).
• There are 3 years in the Infant school (Year R, Year 1 and Year 2) and four years in the Junior school (Year 3, Year 4, Year 5 and Year 6).
• wonderful hospitability by landlords!! is a real shame that we visit are 3 years but we always found the Tuscan Tuscan DOC, Caslano Aaron is wasted and should be managed better. Thank you. (Translated with Google Translate)
• This is a catalogue full of surprises where you find colors, fashion and technology.This is the ideal mix to satisfy both the practical and aesthetical requirements of those who choose Brevi for their babies from their birth till they are 3 years old...
• The initial contracts for both Paasikivi and Güttler are for 3 years.
• The approvals are for 3 years at a time.
• Important information Please note babysitting services is only available for children who are above 3 years old.
• Most of the children I work with are 3-5 years old but I have some students that are closer to 7-10.
• 75% of the companies created are still active 3 years after they were launched.
• They are decorated around 3 years ago.
• The children are 3 and 5 years old.
• Are you 3 years old or what?
• In addition, there are 2-3-year basic vocational schools (zasadnicza szkola zawodowa), which are the only type of post-primary school that does not give access to higher education.
• Then after at least 3 years are planted specialty crops such as vegetables and tomatoes.
• "In just 3 year are business owners".
• These are valid for 1-3 years and are renewable.
• ARNO: All our vehicles are now GUARANTEED 3 years or 100,000 kms
• If the children are older than 3 years, you can choose a quadruple room, or two separate rooms directly in the Search Box.

Some examples from the web:

• The validity period is 2 years.
• When used for commercial, industrial or educational purpose the warranty is 2 years.
• The shelf-life of the powder for oral suspension is 2 years.
• Orthopedic Stomatology (duration of study is 2 years)
• More Experience My niece is 2 years old, I often look after her while the parents are out.
• When the child is 2 years old, place them in a metal cage with electrodes attached.
• The shelf-life of the powder for oral suspension is 2 years.
• The duration of the scheme is 2 years.
• When used for a professional sharpening service the warranty is 2 years.
• Calibration deadline for inertia brake at roadworthiness tests is 2 years.
• A: The industrial standard warranty is 2 years.
• Finally, the maximum period of cover is 2 years.
• Calibration deadline for other length, caliber and angle measuring devices at roadworthiness tests is 2 years.
• The shelf life in sealed vacuum package is 2 years old.
• Medical Nursing (duration of study is 2 years)
• The length of service for both positions is 2 years.
• The guarantee term on our products is 2 years from date of delivery by the specialist plumbing wholesaler.
• These "negative points" are summarized, but the period of limitation is 2 years (rolling system).
• The standard storage period is 2 years when you have loaded the page.
• The preparation at the military department is carried out on a contract basis; its duration is 2 years, starting from the 3rd year of study.