如果是10米呢？每年取2%

		balance end of year	withdrawal
1999	20.89%	1000	19.6
2000	-9.03%	890.1	19.992
2001	-11.85%	764.63115	20.39184
2002	-21.97%	576.249846345	20.7996768
2003	28.36%	718.874625968442	21.215670336
2004	10.74%	774.866090461453	21.63998374272
2005	4.83%	790.652138888021	22.0727834175744
2006	15.61%	892.000154350867	22.5142390859259
2007	5.48%	918.367523723369	22.9645238676444
2008	-36.55%	559.739669934833	23.4238143449973
2009	25.94%	681.512325970931	23.8922906318972
2010	14.82%	758.620162047926	24.3701364445351
2011	2.10%	750.181049006397	24.8575391734258
2012	15.89%	844.527278520088	25.3546899568943
2013	32.15%	1090.6881086074	25.8617837560322
2014	13.52%	1212.28735713509	26.3790194311528
2015	1.38%	1202.6379032324	26.9065998197759
2016	11.77%	1317.28178462308	27.4447318161714
2017	21.61%	1574.50164646396	27.9936264524948
2018	-4.23%	1479.90660036604	28.5534989815447
2019	31.21%	1913.23195135874	29.1245689611756
2020	18.02%	2228.87178003241	29.7070603403991
2021	28.47%	2833.72451546724	30.3012015472071
2022	-18.01%	2293.06952868438	30.9072255781512
2023		2262.16230310623	31.5253700897142