Optimization of Energy in Sustainable Architecture and Green Roofs in Construction: A Review of Challenges and Advantages

Table 3

The number of articles and research in the field of the green roof by year of publication.

Year	#
1998	377
1999	333
2000	372
2001	426
2002	450
2003	519
2004	561
2005	651
2006	697
2007	837
2008	948
2009	1020
2010	1042
2011	1354
2012	1648
2013	1787
2014	2103
2015	2346
2016	2752
2017	3198
2018	3194
2019	3482
2020	3943
2021	1514