- 2000: $5.7 trillion

- 2001: $5.8 trillion

- 2002: $6.2 trillion

- 2003: $6.8 trillion

- 2004: $7.4 trillion

- 2005: $7.9 trillion

- 2006: $8.5 trillion

- 2007: $9.0 trillion

- 2008: $10.0 trillion

- 2009: $11.9 trillion

- 2010: $13.5 trillion

- 2011: $14.8 trillion

- 2012: $16.4 trillion

- 2013: $16.7 trillion

- 2014: $17.8 trillion

- 2015: $18.1 trillion

- 2016: $19.6 trillion

- 2017: $19.9 trillion

- 2018: $21.5 trillion

- 2019: $22.7 trillion

- 2020: $23.2 trillion

- 2021: $27.7 trillion

- 2022: $30.0 trillion

- 2023: $31.8 trillion

- 2024: $33.9 trillion

- 2025: $36.3 trillion