Year	NUTS III	Dwelling Units (%)
Year	NUTS III	Total	T0 & T1	T2	T3	T4+
2001	Portugal	115,154	10,840	37,156	50,357	14,735
	Mainland	109,997	10,126	35,244	48,391	14,237
	Lisbon	1440	229	416	571	208
2006	Portugal	68,764	6562	19,463	31,505	11,232
	Mainland	63,928	5867	17,767	29,464	10,829
	Lisbon	37	1	21	15	0
2011	Portugal	26,255	2287	5812	12,730	5426
	Mainland	24,906	2152	5440	12,044	5270
	Lisbon	352	61	64	100	127
2019	Portugal	14,190	1542	2988	7261	2399
	Mainland	13,451	1437	2736	6975	2303
	Lisbon	199	92	23	59	25