Year	Percent
1950	13.79419
1955	15.0955
1960	14.79854
1965	13.71676
1970	12.5111
1975	12.2819
1980	11.85568
1985	11.81437
1990	11.14748
1995	10.66789
2000	10.66748
2005	10.66402
2010	10.56349
2015	10.36602
2020	11.59115
2025	14.05452
2030	16.88929
2035	19.39213
2040	21.36277
2045	22.15018
2050	22.50699
2055	23.29341
2060	24.10589
2065	25.04628
2070	25.74397
2075	25.90357
2080	25.91373
2085	25.98662
2090	26.12168
2095	26.19792
2100	26.15629