Year	Percent
1950	4.94231
1955	4.65624
1960	4.65291
1965	4.68632
1970	4.66329
1975	4.91917
1980	4.78311
1985	4.61348
1990	4.77694
1995	4.59397
2000	4.50739
2005	4.21276
2010	4.00793
2015	4.21818
2020	4.58759
2025	4.80824
2030	4.94128
2035	4.89304
2040	5.12213
2045	5.68104
2050	6.48493
2055	7.24432
2060	7.77451
2065	8.30773
2070	9.13132
2075	10.15988
2080	11.29566
2085	12.39815
2090	13.41951
2095	14.46589
2100	15.62346