Year	Number of Firms
1992-01-01	4
1997-01-01	32
2002-01-01	45
2003-01-01	68
2004-01-01	92
2005-01-01	97
2006-01-01	103
2007-01-01	144
2008-01-01	159
2009-01-01	123
2010-01-01	120
2011-01-01	114
2012-01-01	116
2013-01-01	149
2014-01-01	127
2015-01-01	109
2016-01-01	135