Year	Percent
1950	7.334
1955	7.11204
1960	6.88977
1965	6.64777
1970	6.00922
1975	5.19564
1980	4.41684
1985	3.99864
1990	5.31364
1995	5.27765
2000	5.3792
2005	5.13276
2010	4.88865
2015	5.21554
2020	5.93902
2025	6.83726
2030	7.65491
2035	8.3882
2040	9.10774
2045	10.23569
2050	11.94277
2055	13.35114
2060	14.45425
2065	15.05976
2070	16.23355
2075	17.99559
2080	19.76648
2085	21.30922
2090	22.63109
2095	23.97918
2100	25.50481