Year	Number of Firms
1992-01-01	13
1997-01-01	28
2002-01-01	15
2003-01-01	15
2004-01-01	23
2005-01-01	17
2006-01-01	22
2007-01-01	21
2008-01-01	28
2009-01-01	30
2010-01-01	30
2011-01-01	39
2012-01-01	36
2013-01-01	31
2014-01-01	38
2015-01-01	38
2016-01-01	40