Year	Number of Firms
1992-01-01	4
1997-01-01	16
2002-01-01	14
2003-01-01	15
2004-01-01	15
2005-01-01	17
2006-01-01	22
2007-01-01	23
2008-01-01	22
2009-01-01	27
2010-01-01	29
2011-01-01	39
2012-01-01	31
2013-01-01	29
2014-01-01	33
2015-01-01	28
2016-01-01	30