Year	Percent
1950	9.48243
1955	9.47949
1960	8.13451
1965	9.3877
1970	10.53641
1975	11.81322
1980	12.31608
1985	10.7885
1990	9.53216
1995	7.85197
2000	5.80471
2005	7.62909
2010	6.52822
2015	5.49973
2020	5.89373
2025	5.95493
2030	4.4621
2035	4.77478
2040	4.54986
2045	4.59842
2050	4.78203
2055	4.87795
2060	4.74017
2065	4.56461
2070	4.53765
2075	4.60308
2080	4.68046
2085	4.71083
2090	4.64792
2095	4.51992
2100	4.43661