Year	current international $
1990	6057.612833000532
1991	6405.38437114529
1992	6639.550004010324
1993	6823.747692869724
1994	7133.503618019213
1995	7298.541390024254
1996	7584.89694217994
1997	8000.2689253634535
1998	8161.851106888274
1999	8126.714195824346
2000	8487.849589958967
2001	8598.342772057053
2002	8615.473369733389
2003	8838.673959471593
2004	9427.22960433904
2005	10036.023093838192
2006	11001.639750008677
2007	11829.87260402978
2008	12449.14317835236
2009	12220.140234739021
2010	12950.714942170325
2011	13805.79888355227
2012	14121.014086986917
2013	14639.801060881733
2014	14941.589661061096
2015	14770.383238873877
2016	14985.238657883701
2017	15597.632813305794
2018	16174.235524748665
2019	16562.67300813136
2020	15959.284481026876
2021	17874.996149173774
2022	20002.041997159446
2023	21084.905690310126