Year	Number of Firms
1992-01-01	5
1997-01-01	8
2002-01-01	6
2003-01-01	7
2004-01-01	13
2005-01-01	17
2006-01-01	22
2007-01-01	22
2008-01-01	29
2009-01-01	33
2010-01-01	38
2011-01-01	42
2012-01-01	36
2013-01-01	39
2014-01-01	38
2015-01-01	41
2016-01-01	48