Year	Number of Firms
1992-01-01	3
1997-01-01	15
2002-01-01	16
2003-01-01	7
2004-01-01	22
2005-01-01	19
2006-01-01	23
2007-01-01	22
2008-01-01	28
2009-01-01	22
2010-01-01	32
2011-01-01	28
2012-01-01	34
2013-01-01	27
2014-01-01	36
2015-01-01	34
2016-01-01	45