Year	Percent
1950	5.40735
1955	4.72035
1960	4.3158
1965	3.4767
1970	2.92474
1975	3.11168
1980	2.39884
1985	1.7926
1990	2.27812
1995	2.49194
2000	2.97467
2005	2.46027
2010	1.83208
2015	2.34278
2020	3.6169
2025	5.67004
2030	8.61131
2035	11.42576
2040	13.59438
2045	15.60004
2050	18.24914
2055	21.51472
2060	24.17911
2065	26.64592
2070	28.60088
2075	30.10193
2080	31.24282
2085	32.10584
2090	32.79337
2095	33.2846
2100	33.75796