 
<prompt> Sauye-sauye a Yaɗuwar Yin Alluran Riga-kafi na Farko | Kason yara 'yan watanni 12-23 da aka yi wa dukkan alluran riga-kafi na farko guda 8 | (EDSM na 1995-96, 32) (EDSM na 2001, 29) (EDSM na 2006, 48) (EDSM na 2012-13, 39) (EDSM na 2018, 45) <response> Yaɗuwar alluran riga-kafi na farko sun ƙaru daga kashi 32% na yaran da aka yi wa dukkan alluran riga-kafi na farko a 1995-96 zuwa ƙolin kashi 48% a 2006. Yaɗuwar alluran riga-kafi ya ragu a tsakanin 2006 da 2012-13, sannan sun ƙaru zuwa kashi 45% a 2018.  