Consider the yield data in the table and fit the full yield curve for maturities from 1 to 30 years using Nelson-Siegel-Svensson model in excel. Term to Maturity 1yr 3yr 8yr 18yr 21y Yield to Maturity 1.2% 1.6% 2.1% 2.2% 2.7%

Time	Yield	NSS	Residual
1	0.39%	2.16%	0.00031350342546	1	0.01
2	0.61%	2.03%	0.00020059807792	2	0.01
3		1.85%		3	0.01
4		1.70%		4	0.01
5		1.58%		1	1.00
8		1.37%		2	1.00
10		1.30%
15	2.70%	1.20%	0.00022500020190
20		1.15%
25	3.32%	1.12%	0.00048400000001
30		1.10%
		Sum	0.00122310170529
	0.00