Year	Number of Firms
1992-01-01	129
1997-01-01	166
2002-01-01	178
2003-01-01	243
2004-01-01	270
2005-01-01	263
2006-01-01	270
2007-01-01	342
2008-01-01	383
2009-01-01	409
2010-01-01	381
2011-01-01	477
2012-01-01	449
2013-01-01	426
2014-01-01	451
2015-01-01	426
2016-01-01	401