The monthly contribution to systematic investment plans (SIPs) grew by Rs 423.33 crore in May, the Association of Mutual Funds in India (Amfi) has revealed in its monthly industry data. The figures for May 31, 2022 was 12,286.42 crore, higher by Rs 423.33 crore as against the April 30, 2022 figure of Rs 11,863.09 crore.