Year	Number of Firms
1992-01-01	10
1997-01-01	22
2002-01-01	19
2003-01-01	23
2004-01-01	33
2005-01-01	28
2006-01-01	22
2007-01-01	28
2008-01-01	31
2009-01-01	26
2010-01-01	40
2011-01-01	36
2012-01-01	39
2013-01-01	36
2014-01-01	38
2015-01-01	38
2016-01-01	39