Year	Number of Firms
1992-01-01	31925
1997-01-01	45682
2002-01-01	15157
2003-01-01	11641
2004-01-01	8594
2005-01-01	6265
2006-01-01	4325
2007-01-01	3539
2008-01-01	2270
2009-01-01	11
2010-01-01	6
2012-01-01	2
2014-01-01	3
2015-01-01	6
2016-01-01	2