Year including construction (constant 2015 US$) 1991 86281.4090682206 1992 85309.96653549398 1993 87327.96657911611 1994 88612.22854490671 1995 90594.99305382711 1996 94158.10205765319 1997 95836.01895717489 1998 100638.17218285533 1999 103718.43797074804 2000 102894.9333196291 2001 104783.94036990257 2002 106478.31024604087 2003 110482.31512322466 2004 109437.80080816039 2005 108929.03493932278 2006 107561.87973222243 2007 109587.98150979719 2008 108766.76580818229 2009 115348.39426942049 2010 117508.17676420212 2011 117855.14806044535 2012 124252.82197530958 2013 128823.59333777669 2014 129908.08659051741 2015 135260.20505430433 2016 136651.54725888927 2017 133994.51315366343 2018 132579.38624944104 2019 136827.4133708614 2020 137117.06728426553 2021 133904.44435220736 2022 132334.37374283464