Year	Number of Firms
1992-01-01	21
1997-01-01	25
2002-01-01	25
2003-01-01	26
2004-01-01	31
2005-01-01	17
2006-01-01	33
2007-01-01	36
2008-01-01	35
2009-01-01	46
2010-01-01	48
2011-01-01	45
2012-01-01	47
2013-01-01	39
2014-01-01	49
2015-01-01	45
2016-01-01	46