Year current US$ 1977 189999.99761581398 1980 930000.007152557 1981 250000 1982 340000.00357627904 1983 439999.997615814 1984 330000.013113022 1985 509999.99046325695 1986 720000.028610229 1987 740000.009536743 1988 460000.00834465 1989 750000 1990 779999.971389771 1991 829999.983310699 1992 899999.976158142 1993 860000.014305115 1994 860000.014305115 1995 1820000.05245209 1996 1789999.96185303 1997 2339999.91416931 1998 1779999.97138977 1999 1080000.04291534 2000 810000.002384186 2001 2069999.9332428002 2002 2230000.01907349 2003 1980000.01907349 2004 2119999.8855590797 2005 1190000.0572204601 2006 1860000.01430511 2007 2130000.1144409203 2008 2740000.00953674 2009 2579999.92370605 2010 2670000.07629395 2011 2900000.09536743 2012 2256334.06639099 2013 2555593.01376343 2014 2612059.3547821 2015 2721078.6342620896 2016 2930807.35206604 2017 2714583.87374878 2018 2207439.89944458 2019 3350253.58200073 2020 4088719.84481812 2021 3847511.76834106 2022 4947050.09460449