Year	Percent
1950	2.75229
1955	2.68473
1960	2.46792
1965	3.00846
1970	3.39833
1975	3.89588
1980	4.11862
1985	4.16357
1990	4.80804
1995	5.23107
2000	6.1189
2005	7.30383
2010	8.44116
2015	9.99918
2020	12.02466
2025	14.08147
2030	15.51776
2035	16.59305
2040	18.09427
2045	19.90616
2050	21.19912
2055	22.56216
2060	23.53843
2065	24.66397
2070	26.43934
2075	28.17481
2080	29.59137
2085	30.7862
2090	31.90556
2095	32.98735
2100	33.95781