Ithemostati Nest is a smart ithemostati, okuyinto ufunda imikhuba bese ulungisa isheduli Ukushisa yendlu yakho ukuze ivumelane nokuziphatha kwakho. This can lead to savings on your energy bill. It claims it can lower your bills up to 20%. The most dominant native ethnic group is the Yamato people; primary minority groups include the indigenous Ainu and Ryukyuan people, as well as social minority groups like the burakumin. There are persons of mixed ancestry incorporated among the Yamato, such as those from Ogasawara Archipelago. In 2014, foreign-born non-naturalized workers made up only 1.5% of the total population. Japan is widely regarded as ethnically homogeneous, and does not compile ethnicity or race statistics for Japanese nationals; sources varies regarding such claim, with at least one analysis describing Japan as a multiethnic society while another analysis put the number of Japanese nationals of recent foreign descent to be minimal. Most Japanese continue to see Japan as a monocultural society. Former Japanese Prime Minister and current Finance Minister Tarō Asō described Japan as being a nation of "one race, one civilization, one language and one culture", which drew criticism from representatives of ethnic minorities such as the Ainu.