With normal use, your tent should last for many years. Take it down when not in use, and avoid prolonged exposure to strong sunlight.
Care: periodically treat all zips with a silicone spray, especially after use in sandy and dusty conditions. Occasionally wipe poles with silicone spray. Remove dirt from tent with a soft brush and mild soap solution. Don't machine wash or tumble dry and don't use detergent. Dry thoroughly before packing away.