Year current US$ 1981 170000.00178813902 1982 300000.00074505823 1983 480000.00417232537 1984 2150000.058114533 1985 1779999.9807029967 1986 3819999.9928474417 1987 3779999.956488605 1988 910000.0225007529 1989 2509999.975562098 1990 1760000.0053644169 1991 599999.9791383739 1992 -620000.0159442422 1993 -29999.958351253823 1994 -590000.0035762787 1995 -409999.96662139817 1996 -1090000.02220273 1997 -319999.97980892716 1998 -1129999.935626979 1999 -190000.00692903937 2000 -419999.9794363974 2001 849999.994039536 2002 -879999.9766051765 2003 139999.9931454679 2004 19999.973475933628 2005 639999.9614804995 2006 810000.0396370869 2007 3539999.797940254 2008 -309999.9949336035 2009 639999.9484419798 2010 -330000.01311302197 2011 129999.97287988773 2012 -329999.99448657036 2013 799999.9690800903 2014 1060000.0247359273 2015 143989.98022079398 2016 -23788.99976611179 2017 -472848.7730026244 2018 560179.967433214 2019 1863915.890455243 2020 755344.3647921073 2021 874999.9627470968 2022 3118370.037525894