Most stony meteorites are chondrites, and their formation ages cluster around 4.56 to 4.57 billion years, so they predate Earth at 4.54 billion years.
Estimates of total meteorites that reach the ground at sizes you could pick up, roughly >10 g, are around 18,000 per year worldwide, and about 85 to 90 percent of those are chondrites, giving roughly 15,000 older than Earth.
Nearly all fall into oceans or remote land, which is why we only recover a few dozen each year. So the best guess is on the order of 10,000 to 20,000 per year, with a midpoint near 15,000.
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