with us now is patrick spence.r a little constrained on december but you're excited about 2022. so thanks for joining us, first of all that is where i'd like to start. what is your sense of the number of sonos devices that your typical customer is going to have when they are fully penetrated and what is your upgrade cycle like are you getting consumers who bought a so hesonos maybe three years ago to upgrade at the rate you need to? >> great to be back, jon it goes right to the heart of our model which is so unique compared to anybody else in consumer electronics so yesterday we reported that we've actually gone from 2.9 products last year to 3 presidentproducts per average home this year and 46% of our sales last year came from customers who were adding anotad ing sonos speaker to their system and we think that we can take that anywhere from 4 to 6. and that really -- i would say it is only limited by our own imagination. we're always working on the exciting roadmap, doing new products in the categories that we pl