Year	Percent
1950	4.24664
1955	5.25582
1960	7.01782
1965	6.5332
1970	5.93955
1975	5.36863
1980	5.0133
1985	4.51799
1990	4.47348
1995	4.44164
2000	4.43926
2005	4.88915
2010	5.13851
2015	5.17038
2020	5.50122
2025	6.03808
2030	6.74139
2035	7.89427
2040	8.9447
2045	9.65481
2050	10.28151
2055	11.34543
2060	12.83229
2065	14.50393
2070	16.39323
2075	18.18109
2080	19.71323
2085	21.1188
2090	22.52912
2095	23.97674
2100	25.42912