Year	Number of Firms
1992-01-01	4
1997-01-01	24
2002-01-01	42
2003-01-01	57
2004-01-01	90
2005-01-01	168
2006-01-01	199
2007-01-01	237
2008-01-01	317
2009-01-01	208
2010-01-01	206
2011-01-01	212
2012-01-01	185
2013-01-01	218
2014-01-01	213
2015-01-01	132
2016-01-01	187