Year	Percent
1950	11.6847
1955	12.66216
1960	13.73683
1965	14.61367
1970	15.83151
1975	16.96078
1980	16.46352
1985	17.78361
1990	23.09618
1995	24.89718
2000	26.79839
2005	27.63942
2010	29.31712
2015	31.048
2020	33.03732
2025	35.86072
2030	38.77012
2035	41.2695
2040	42.51013
2045	42.70366
2050	42.40163
2055	41.88459
2060	41.22414
2065	40.73723
2070	40.54914
2075	40.28757
2080	40.17044
2085	40.19831
2090	40.36911
2095	40.65418
2100	40.99474