The sentence in question: 店員さんに話を聞くと、「10年ほど前から海外のだっこひもが人気となり需要が高まった。
For full context: https://www3.nhk.or.jp/news/web_tokushu/2018_0521.html?utm_int=news_contents_tokushu_004
My attempt at tranlstion: When we asked the shopowner the story: "Since before about 10 years, the foreign "dakko" cords have become popular and the demand has risen."
Ive encountered the と particle in various uses about which my textbook has never told me anything, and many of them meant something like "make A to B". So this question is just for confirmation that I guessed correctly here :D