Year	constant 2021 international $
2002	5902.874086074601
2003	5932.520736331638
2004	6240.367881096267
2005	6823.310462565772
2006	7180.04740521989
2007	8052.4300505449255
2008	8222.320249137647
2009	8870.64230976897
2010	8754.559188884346
2011	8707.882019539516
2012	9194.23007185349
2013	9423.771811291786
2014	9694.499031682713
2015	9611.672729696382
2016	9011.136033419683
2017	8581.223458831673
2018	8000.925844544088
2019	7462.890758690405
2020	6980.715433189379
2021	6806.261140233806
2022	6836.106304728215
2023	6631.276543637721