Year	Number of Firms
1992-01-01	6
1997-01-01	17
2002-01-01	17
2003-01-01	20
2004-01-01	27
2005-01-01	16
2006-01-01	23
2007-01-01	22
2008-01-01	23
2009-01-01	29
2010-01-01	26
2011-01-01	33
2012-01-01	31
2013-01-01	33
2014-01-01	45
2015-01-01	30
2016-01-01	29