I scrapped 299 layouts last year.
I keep them resized (700x700) in a monthly folder so I can grab them in a jiffy (like on social media, etc). That's how I was able to count them so quickly.
My goal for this year? I'd like to scrap an average of 15 new layouts a month-give or take. Ideally, I'd like to complete the new Passport challenge every month, so however many layouts that is, that's my goal for the year.