2-5 a year I believe.
At least two lunar eclipses and as many as five occur every year, although total lunar eclipses are significantly less common. If the date and time of an eclipse is known, the occurrences. On average, a total lunar eclipse will happen a bit more frequently than twice every three years. Every three and a half years, two total lunar eclipses will happen within the same year. Every 200 years, three total lunar eclipses happen in the same year