Year including construction (constant 2010 US$) 1991 238112.240839477 1992 253907.728611944 1993 261667.737298492 1994 272015.27675012 1995 283306.31193854 1996 289221.778522671 1997 292076.734941835 1998 287217.138674475 1999 292083.888257716 2000 307060.764281048 2001 311938.456212014 2002 313884.650902186 2003 319423.06363096 2004 341058.390470166 2005 340911.891705847 2006 325764.543773935 2007 307618.839846968 2008 297673.235026391 2009 301143.313986601 2010 300843.789087595 2011 285585.12222317 2012 285658.762641807 2013 280093.157090924 2014 279960.534903014 2015 288049.894693069 2016 298617.489860945 2017 302082.31645949 2018 299784.103675149