Complex sentence: The circulation of the paper was 41,000 copies in 1963,53,000 copies in 1973,54,600 copies in 1983 and 41,300 copies in 1993.
Split into simpler sentences: The circulation of the paper was 41,000 copies in 1963. Its circulation was 53,000 copies in 1973,54,600 copies in 1983 and 41,300 copies in 1993.