Year	Number of Firms
1992-01-01	89
1997-01-01	131
2002-01-01	148
2003-01-01	149
2004-01-01	153
2005-01-01	152
2006-01-01	128
2007-01-01	149
2008-01-01	139
2009-01-01	149
2010-01-01	151
2011-01-01	168
2012-01-01	184
2013-01-01	185
2014-01-01	169
2015-01-01	184
2016-01-01	184